Vitamin a
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This document discusses vitamin A, including its various names, types, sources, functions, and potential deficiencies and toxicities. It provides details on retinol and beta-carotene, lists common animal and plant sources of vitamin A, and describes symptoms of hypervitaminosis A and deficiencies such as xerophthalmia and keratomalacia. References are also included.
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Vitamin a presentation, Vitamin A Deficiency, Vitamin A toxicity
This presentation contains Importance of vitamin A, Sources of Vitamin A, Absorption,Transport and Excretion of Vitamin A, Vitamin A Deficiency, Vitamin A Toxicity, Required dose of Vitamin A, Nutrition, Nutrition deficiency
Vitamin A
This document provides an overview of vitamin A, including its classification, sources, functions, deficiency diseases, and national prevention programs in India. Vitamin A is a fat-soluble vitamin that exists in active forms of retinol, retinal, and retinoic acid. Major sources include animal foods like liver, eggs and dairy, and plant foods like carrots, sweet potatoes and dark leafy greens. Vitamin A plays an essential role in vision, cell growth and immune function. Deficiency can cause night blindness, xerophthalmia, and increased susceptibility to infection. India has implemented national programs to provide supplemental vitamin A to children and pregnant/lactating women to reduce deficiency.
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Vitamin C is an essential nutrient that prevents scurvy, a disease caused by vitamin C deficiency. It was discovered in the 17th century that lemon juice could prevent scurvy in sailors. Vitamin C helps form collagen, protects the immune system, aids iron absorption, and facilitates fat and neurotransmitter metabolism. Good dietary sources include citrus fruits, berries, tomatoes, and leafy greens. While deficiency is rare, complete lack of vitamin C causes scurvy. The recommended daily intake is 60 mg but higher doses are considered safe and may provide additional health benefits.
VITAMIN A
02 vitamin a
1. Vitamin A General biochemistry and types General functions Functions in the vision cycle Deficiency and diseases
2. Vitamin A Essential Non-caloric Required in very small amounts
3. Vitamins - Classified Based on Solubility Fat-Soluble Vitamins A, D, E, and K Water-Soluble Vitamins ascorbic acid (vitamin C) thiamin (vitamin B1) riboflavin (vitamin B2) niacin pyridoxine (vitamin B6) biotin pantothenic acid folate cobalamin (vitamin B12)
4. Vitamin A (Preformed and Provitamin) Preformed: Three preformed compounds that are metabolically active and found in animal products retinol – alcohol form retinal or retinaldehyde – aldehyde form retinoic acid – acid form Provitamin: Carotenoids (β-carotene) and cryptoxanthin can yield retinoids when metabolized in the body These are from plant sources
Vitamin e
This document discusses vitamin E, including its dietary sources, biochemical functions, absorption and transport, recommended daily allowance, deficiency symptoms, and toxicity. Vitamin E is a fat-soluble vitamin and antioxidant that prevents lipid peroxidation and protects cell membranes. Key dietary sources include nuts, seeds, and green leafy vegetables. The RDA for vitamin E is 15 mg/day for adults. Deficiency can cause neurological and muscle problems, while toxicity is rare and requires extremely high doses over 1000 mg/day.
Chapter 9 vitamins and chapter 10 minerals
Vitamins are essential organic substances needed by the body in small amounts to perform specific metabolic functions. There are 13 legitimate vitamins that exist as either fat-soluble (A, D, E, K) or water-soluble (C, B-complex). Fat-soluble vitamins are stored in tissues while water-soluble vitamins are not stored and require consistent dietary intake. Deficiencies of vitamins can result in diseases like rickets, osteomalacia, beriberi, and pellagra depending on the specific vitamin lacking in the diet.
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Vitamins are organic molecules that are essential micronutrients required for normal cellular function and tissue integrity. They are classified as either fat-soluble (A, D, E, K) or water-soluble (B and C). Vitamin D is produced in the body from sunlight exposure and is important for calcium absorption and bone health. A deficiency can cause rickets or osteomalacia due to impaired bone mineralization, while excess intake can result in hypercalcemia and soft tissue calcification. Vitamin D works with parathyroid hormone and calcitonin to maintain appropriate serum calcium levels through effects on bone resorption and renal excretion.
Vitamins
Vitamins are chemical compounds that regulate human body functions and metabolism. They are necessary for converting food into energy and tissues. There are several types of vitamins including A, B1, B2, B12, C, D, E, and K. Each vitamin plays an important role and deficiency can cause specific health issues. For example, vitamin A deficiency can cause night blindness, while vitamin C deficiency results in scurvy. The document provides information on each vitamin's function, deficiency symptoms, and major food sources.
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Vitamin a presentation, Vitamin A Deficiency, Vitamin A toxicity
This presentation contains Importance of vitamin A, Sources of Vitamin A, Absorption,Transport and Excretion of Vitamin A, Vitamin A Deficiency, Vitamin A Toxicity, Required dose of Vitamin A, Nutrition, Nutrition deficiency
Vitamin A
This document provides an overview of vitamin A, including its classification, sources, functions, deficiency diseases, and national prevention programs in India. Vitamin A is a fat-soluble vitamin that exists in active forms of retinol, retinal, and retinoic acid. Major sources include animal foods like liver, eggs and dairy, and plant foods like carrots, sweet potatoes and dark leafy greens. Vitamin A plays an essential role in vision, cell growth and immune function. Deficiency can cause night blindness, xerophthalmia, and increased susceptibility to infection. India has implemented national programs to provide supplemental vitamin A to children and pregnant/lactating women to reduce deficiency.
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Vitamin C is an essential nutrient that prevents scurvy, a disease caused by vitamin C deficiency. It was discovered in the 17th century that lemon juice could prevent scurvy in sailors. Vitamin C helps form collagen, protects the immune system, aids iron absorption, and facilitates fat and neurotransmitter metabolism. Good dietary sources include citrus fruits, berries, tomatoes, and leafy greens. While deficiency is rare, complete lack of vitamin C causes scurvy. The recommended daily intake is 60 mg but higher doses are considered safe and may provide additional health benefits.
VITAMIN A
02 vitamin a
1. Vitamin A General biochemistry and types General functions Functions in the vision cycle Deficiency and diseases
2. Vitamin A Essential Non-caloric Required in very small amounts
3. Vitamins - Classified Based on Solubility Fat-Soluble Vitamins A, D, E, and K Water-Soluble Vitamins ascorbic acid (vitamin C) thiamin (vitamin B1) riboflavin (vitamin B2) niacin pyridoxine (vitamin B6) biotin pantothenic acid folate cobalamin (vitamin B12)
4. Vitamin A (Preformed and Provitamin) Preformed: Three preformed compounds that are metabolically active and found in animal products retinol – alcohol form retinal or retinaldehyde – aldehyde form retinoic acid – acid form Provitamin: Carotenoids (β-carotene) and cryptoxanthin can yield retinoids when metabolized in the body These are from plant sources
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This document discusses vitamin E, including its dietary sources, biochemical functions, absorption and transport, recommended daily allowance, deficiency symptoms, and toxicity. Vitamin E is a fat-soluble vitamin and antioxidant that prevents lipid peroxidation and protects cell membranes. Key dietary sources include nuts, seeds, and green leafy vegetables. The RDA for vitamin E is 15 mg/day for adults. Deficiency can cause neurological and muscle problems, while toxicity is rare and requires extremely high doses over 1000 mg/day.
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Vitamins are essential organic substances needed by the body in small amounts to perform specific metabolic functions. There are 13 legitimate vitamins that exist as either fat-soluble (A, D, E, K) or water-soluble (C, B-complex). Fat-soluble vitamins are stored in tissues while water-soluble vitamins are not stored and require consistent dietary intake. Deficiencies of vitamins can result in diseases like rickets, osteomalacia, beriberi, and pellagra depending on the specific vitamin lacking in the diet.
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Vitamins are organic molecules that are essential micronutrients required for normal cellular function and tissue integrity. They are classified as either fat-soluble (A, D, E, K) or water-soluble (B and C). Vitamin D is produced in the body from sunlight exposure and is important for calcium absorption and bone health. A deficiency can cause rickets or osteomalacia due to impaired bone mineralization, while excess intake can result in hypercalcemia and soft tissue calcification. Vitamin D works with parathyroid hormone and calcitonin to maintain appropriate serum calcium levels through effects on bone resorption and renal excretion.
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Vitamins are chemical compounds that regulate human body functions and metabolism. They are necessary for converting food into energy and tissues. There are several types of vitamins including A, B1, B2, B12, C, D, E, and K. Each vitamin plays an important role and deficiency can cause specific health issues. For example, vitamin A deficiency can cause night blindness, while vitamin C deficiency results in scurvy. The document provides information on each vitamin's function, deficiency symptoms, and major food sources.
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Vitamin A was discovered in the early 20th century through research on the essential dietary factors required for growth. In 1912, Frederick Gowland Hopkins discovered unknown factors in milk that aided rat growth, and in 1917 Elmer McCollum isolated one of these substances, which was later referred to as vitamin A in 1920. Vitamin A occurs in foods as retinoids and carotenoids like beta-carotene, and plays critical roles in vision, cell growth and differentiation, epithelial integrity, immune function, and as an antioxidant. Deficiency of vitamin A can cause night blindness, dry eyes, increased susceptibility to infection, and even blindness.
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Vitamin A is a fat-soluble vitamin that is important for vision, cell growth and differentiation, immunity, and reproduction. It exists in preformed and provitamin A carotenoid forms. Beta-carotene from plants is cleaved to form retinal in the intestine which is then converted to retinol and stored in the liver. Deficiency can cause night blindness, dry eyes, susceptibility to infections, and even blindness. Adequate vitamin A is important for vision, immune function, cell growth and reproduction.
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This document provides information on fat soluble vitamins A, D, E, K, and discusses their sources, functions, and deficiency symptoms. It notes that vitamins A, D, E, K are fat soluble and essential for processes like vision, bone growth, blood clotting, and antioxidant activity. The document also mentions newly discovered vitamins Q and U and their proposed functions in blood clotting and gastrointestinal health.
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Vitamin D is a steroid that is present in animals, plants and yeast. It is insoluble in water but soluble in fat and organic solutions. Vitamin D is sensitive to oxygen, light and iodine. It is considered a prohormone because it is converted to the active form 1,25-dihydroxycholesterol. Vitamin D functions to regulate calcium and phosphorus metabolism by promoting their absorption in the intestines and mobilization from bones. It is necessary for bone development and growth. A deficiency of vitamin D can lead to rickets in children, causing bowed legs and bone fractures, and osteomalacia in adults characterized by poor bone mineralization. Toxicity can result from long-
Vitamin a
This document discusses vitamins, specifically vitamin A. It defines vitamins and explains that vitamin A has several important functions in the body related to vision, epithelial cell integrity, immune response, reproduction and growth. It describes the different forms of vitamin A found in foods and how they are absorbed and transported. Deficiency and toxicity of vitamin A are outlined as well as recommended intake amounts and treatment. The key functions and food sources of vitamin A are summarized.
Vitamin A
Vitamin A is a fat-soluble vitamin that is important for vision and immune function. It can be obtained from animal foods as retinol or from plant foods as provitamin A carotenoids like beta-carotene. Good sources include liver, sweet potatoes, carrots, spinach and pumpkin. A lack of vitamin A can cause eye disease and blindness, while too much preformed vitamin A from supplements can be toxic, especially for pregnant women.
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This document discusses the fat-soluble vitamins A, D, E, and K. It provides details on their sources, absorption, functions, deficiencies, and toxicity. The key points are:
1) Fat-soluble vitamins are stored in tissues and excess intake can be harmful unlike water-soluble vitamins.
2) Vitamin A supports vision, immune function, and cell growth. Too much can cause birth defects and liver damage.
3) Vitamin D aids calcium absorption and bone formation. The body produces it from sunlight but it is also found in foods. Deficiency causes rickets and osteomalacia.
4) Vitamin E is an antioxidant that protects cells. Def
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This document discusses vitamins A and E. It defines vitamins and classifies them as fat-soluble or water-soluble. For vitamin A, it describes the different forms, absorption, transport and storage in the body, and functions including vision, gene expression, cell growth and differentiation. Deficiency causes night blindness and can lead to blindness. Vitamin E is an antioxidant that protects cells and prevents sterility.
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Vitamin E was discovered in 1922 by Herbert Evans and Katherine Bishop. It acts as an antioxidant in the body and is important for immune and cell functions. Deficiency can cause anemia, poor balance, and muscle weakness. Symptoms of deficiency include shaky movements, aging spots on the skin, and sight problems. Deficiency is rare and mainly affects those over 55 years old in the U.S. Deficiency can be treated with a balanced diet, weekly injections, or supplements and resolved within a few weeks in children. Current research is exploring vitamin E's potential role in memory disorders and the elderly.
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Vitamin E is a fat-soluble vitamin that exists as both tocopherols and tocotrienols. It is an important antioxidant that protects cell membranes from oxidative damage by reacting with lipid radicals produced in the body during oxidation. The most biologically active form is alpha-tocopherol. Vitamin E is absorbed with dietary fat and transported throughout the body associated with lipoproteins. A deficiency can cause hemolytic anemia, muscular dystrophy, and neurological problems due to increased lipid peroxidation in tissues.
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Vitamin A is a fat-soluble vitamin found in foods like butter, eggs, and cod liver oil. It exists as retinol, retinal, and retinoic acid in the body and is important for vision, immune function, cell growth and differentiation. The document discusses the chemical characterization and isolation of vitamin A1 (retinol) from sources like fish liver oil. It describes how retinol and retinoic acid function similarly to steroid hormones in regulating protein synthesis and cell growth. Maintaining adequate vitamin A levels is important for epithelial tissue health and the immune system.
Fat soluble vitamins
Fat soluble vitamins A, D, E, and K can be stored in body fat. Vitamins E and K are important fat soluble vitamins. Vitamin E acts as an antioxidant to protect cells from damage. It also helps produce red blood cells and keeps blood from clotting inside vessels. Vitamin K is required for blood clotting and bone health. Deficiencies of vitamins E and K can lead to neurological and neuromuscular problems for vitamin E, and risks of uncontrolled bleeding for vitamin K. Treatment involves vitamin supplementation.
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This document discusses vitamin E, including its structure, sources, roles in the body, health benefits, and deficiencies. Some key points:
- Vitamin E plays a role in maintaining health of tissues and can protect lungs from pollution. Major sources include sunflower seeds, almonds, and avocados.
- It has benefits such as reducing risks of cataracts, diabetes, Parkinson's disease, and respiratory infections. High doses may improve insulin resistance and blood sugar control.
- Deficiency can occur in premature infants and those with fat malabsorption issues. Symptoms include anemia. Overdosing on high levels may cause side effects like nausea and interfere with absorption of vitamins A and K.
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Vitamin A has an important role in vision. It exists in multiple forms including retinol, retinal, and retinoic acid. Retinal is involved in the visual cycle which allows rhodopsin in the eye to regenerate light sensitivity. Vitamin A deficiency can cause night blindness and damage to surface tissues like the cornea. Both deficiency and toxicity of vitamin A can impact health. It is important for cell differentiation and growth.
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This presentation contains brief introduction and classification of vitamins and mainly focus on vitamin A.
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The document discusses fat-soluble vitamins, including vitamins A, D, E, and K. It provides details on the absorption process of fat-soluble vitamins in the small intestine, requiring bile and entering the bloodstream through lymph vessels. Excesses of these vitamins are stored in the liver and fat tissues. Each vitamin's functions, sources, and deficiency signs are outlined, with vitamin A playing roles in vision, growth, and immunity, and vitamin D aiding calcium absorption. Vitamin E acts as an antioxidant while vitamin K is important for blood clotting.
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Vitamin A was discovered in the early 20th century through research on the essential dietary factors required for growth. In 1912, Frederick Gowland Hopkins discovered unknown factors in milk that aided rat growth, and in 1917 Elmer McCollum isolated one of these substances, which was later referred to as vitamin A in 1920. Vitamin A occurs in foods as retinoids and carotenoids like beta-carotene, and plays critical roles in vision, cell growth and differentiation, epithelial integrity, immune function, and as an antioxidant. Deficiency of vitamin A can cause night blindness, dry eyes, increased susceptibility to infection, and even blindness.
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Vitamin A is a fat-soluble vitamin that is important for vision, cell growth and differentiation, immunity, and reproduction. It exists in preformed and provitamin A carotenoid forms. Beta-carotene from plants is cleaved to form retinal in the intestine which is then converted to retinol and stored in the liver. Deficiency can cause night blindness, dry eyes, susceptibility to infections, and even blindness. Adequate vitamin A is important for vision, immune function, cell growth and reproduction.
Fat soluble vitamins
This document provides information on fat soluble vitamins A, D, E, K, and discusses their sources, functions, and deficiency symptoms. It notes that vitamins A, D, E, K are fat soluble and essential for processes like vision, bone growth, blood clotting, and antioxidant activity. The document also mentions newly discovered vitamins Q and U and their proposed functions in blood clotting and gastrointestinal health.
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Vitamin D is a steroid that is present in animals, plants and yeast. It is insoluble in water but soluble in fat and organic solutions. Vitamin D is sensitive to oxygen, light and iodine. It is considered a prohormone because it is converted to the active form 1,25-dihydroxycholesterol. Vitamin D functions to regulate calcium and phosphorus metabolism by promoting their absorption in the intestines and mobilization from bones. It is necessary for bone development and growth. A deficiency of vitamin D can lead to rickets in children, causing bowed legs and bone fractures, and osteomalacia in adults characterized by poor bone mineralization. Toxicity can result from long-
Vitamin a
This document discusses vitamins, specifically vitamin A. It defines vitamins and explains that vitamin A has several important functions in the body related to vision, epithelial cell integrity, immune response, reproduction and growth. It describes the different forms of vitamin A found in foods and how they are absorbed and transported. Deficiency and toxicity of vitamin A are outlined as well as recommended intake amounts and treatment. The key functions and food sources of vitamin A are summarized.
Vitamin A
Vitamin A is a fat-soluble vitamin that is important for vision and immune function. It can be obtained from animal foods as retinol or from plant foods as provitamin A carotenoids like beta-carotene. Good sources include liver, sweet potatoes, carrots, spinach and pumpkin. A lack of vitamin A can cause eye disease and blindness, while too much preformed vitamin A from supplements can be toxic, especially for pregnant women.
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This document discusses the fat-soluble vitamins A, D, E, and K. It provides details on their sources, absorption, functions, deficiencies, and toxicity. The key points are:
1) Fat-soluble vitamins are stored in tissues and excess intake can be harmful unlike water-soluble vitamins.
2) Vitamin A supports vision, immune function, and cell growth. Too much can cause birth defects and liver damage.
3) Vitamin D aids calcium absorption and bone formation. The body produces it from sunlight but it is also found in foods. Deficiency causes rickets and osteomalacia.
4) Vitamin E is an antioxidant that protects cells. Def
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This document discusses vitamins A and E. It defines vitamins and classifies them as fat-soluble or water-soluble. For vitamin A, it describes the different forms, absorption, transport and storage in the body, and functions including vision, gene expression, cell growth and differentiation. Deficiency causes night blindness and can lead to blindness. Vitamin E is an antioxidant that protects cells and prevents sterility.
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https://www.slideshare.net/YashLodha11/vitamin-d-247723886/edit?src=slideview
https://www.linkedin.com/in/yash-lodha-047728211/
https://www.blogger.com/blog/posts/2577104637130363155
Vitamin e
Vitamin E was discovered in 1922 by Herbert Evans and Katherine Bishop. It acts as an antioxidant in the body and is important for immune and cell functions. Deficiency can cause anemia, poor balance, and muscle weakness. Symptoms of deficiency include shaky movements, aging spots on the skin, and sight problems. Deficiency is rare and mainly affects those over 55 years old in the U.S. Deficiency can be treated with a balanced diet, weekly injections, or supplements and resolved within a few weeks in children. Current research is exploring vitamin E's potential role in memory disorders and the elderly.
Vitamin E
Vitamin E is a fat-soluble vitamin that exists as both tocopherols and tocotrienols. It is an important antioxidant that protects cell membranes from oxidative damage by reacting with lipid radicals produced in the body during oxidation. The most biologically active form is alpha-tocopherol. Vitamin E is absorbed with dietary fat and transported throughout the body associated with lipoproteins. A deficiency can cause hemolytic anemia, muscular dystrophy, and neurological problems due to increased lipid peroxidation in tissues.
Vitamin A
Vitamin A is a fat-soluble vitamin found in foods like butter, eggs, and cod liver oil. It exists as retinol, retinal, and retinoic acid in the body and is important for vision, immune function, cell growth and differentiation. The document discusses the chemical characterization and isolation of vitamin A1 (retinol) from sources like fish liver oil. It describes how retinol and retinoic acid function similarly to steroid hormones in regulating protein synthesis and cell growth. Maintaining adequate vitamin A levels is important for epithelial tissue health and the immune system.
Fat soluble vitamins
Fat soluble vitamins A, D, E, and K can be stored in body fat. Vitamins E and K are important fat soluble vitamins. Vitamin E acts as an antioxidant to protect cells from damage. It also helps produce red blood cells and keeps blood from clotting inside vessels. Vitamin K is required for blood clotting and bone health. Deficiencies of vitamins E and K can lead to neurological and neuromuscular problems for vitamin E, and risks of uncontrolled bleeding for vitamin K. Treatment involves vitamin supplementation.
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This document discusses vitamin E, including its structure, sources, roles in the body, health benefits, and deficiencies. Some key points:
- Vitamin E plays a role in maintaining health of tissues and can protect lungs from pollution. Major sources include sunflower seeds, almonds, and avocados.
- It has benefits such as reducing risks of cataracts, diabetes, Parkinson's disease, and respiratory infections. High doses may improve insulin resistance and blood sugar control.
- Deficiency can occur in premature infants and those with fat malabsorption issues. Symptoms include anemia. Overdosing on high levels may cause side effects like nausea and interfere with absorption of vitamins A and K.
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Vitamin A has an important role in vision. It exists in multiple forms including retinol, retinal, and retinoic acid. Retinal is involved in the visual cycle which allows rhodopsin in the eye to regenerate light sensitivity. Vitamin A deficiency can cause night blindness and damage to surface tissues like the cornea. Both deficiency and toxicity of vitamin A can impact health. It is important for cell differentiation and growth.
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Vitamin A deficiency can lead to several health issues:
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Vitamin A and its related compounds play an essential role in visual function through their involvement in the visual cycle. Vitamin A is obtained through the diet from animal foods as retinol and plant foods as provitamin A carotenoids. Upon exposure to light, the photopigment rhodopsin in rod cells decomposes and is regenerated through a series of reactions involving retinal and related compounds derived from vitamin A. Deficiency of vitamin A can lead to xerophthalmia, beginning with night blindness and potentially progressing to corneal ulceration and blindness if left untreated.
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Vitamin A MUHAMMAD MUSTANSAR
Vitamin A has important roles in vision, cellular differentiation, and gene expression. It is found in two forms: pre-formed retinol in animal foods like liver, dairy, and fish; and pro-vitamin A carotenoids in brightly colored fruits and vegetables like carrots, sweet potatoes, and mangoes. An adequate intake of vitamin A is important for vision, epithelial cell health, reproduction, bone remodeling, growth, and resistance to infection. Deficiency can cause night blindness, dry eyes, and increased susceptibility to disease.
FOOD SCIENCE AND NUTRITION
This document summarizes key vitamins and their functions. It discusses both fat-soluble vitamins (A, D, E, K) and water-soluble vitamins (C, B-complex). Each vitamin is described in terms of its chemical properties, functions in the body, dietary sources, and deficiency symptoms. The B-complex vitamins include thiamine (B1), riboflavin (B2), niacin (B3), pantothenic acid (B5), pyridoxine (B6), biotin (B7), folic acid (B9), and cobalamin (B12).
Vitamins
This document summarizes key vitamins and their functions. It discusses both fat-soluble vitamins (A, D, E, K) and water-soluble vitamins (C, B-complex). Each vitamin is described in terms of its chemical properties, functions in the body, food sources, and deficiency symptoms. The document provides a comprehensive overview of the essential vitamins needed for human health.
Vitamin deficiency disorder
Vitamin deficiencies can cause several disorders. There are 13 known vitamins classified as either fat-soluble or water-soluble. Vitamin A deficiency can lead to night blindness and immune problems, while vitamin D deficiency results in rickets in children and osteomalacia in adults. Both vitamins are important for growth, immunity, and calcium absorption. Maintaining adequate levels through diet and sunlight exposure is important to prevent deficiency disorders.
Vitamins
Vitamins are organic compounds that are required in small amounts for various metabolic processes in the body. They are classified as either fat-soluble or water-soluble. Vitamin A supports vision, growth, immunity, and skin health. Vitamin D aids in calcium absorption and bone growth. Vitamin E acts as an antioxidant and protects cell membranes. Vitamin K is essential for blood clotting. Vitamin C is an antioxidant and supports wound healing and collagen production. The B vitamins function as coenzymes in energy production from carbohydrates, fats, and proteins. Deficiencies of various vitamins can lead to conditions like scurvy, beriberi, rickets, and pellagra
Vitamin deficiency disorders 1916 priyanka
Vitamins are the organic compounds and it is a micro nutrient which requires in small quantity for proper functioning of the organism to maintain its metabolism.
Vitamins, Trace Minerals .pptx
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Hypervitaminosis
The document discusses hypervitaminosis, which is a condition caused by toxic levels of vitamins in the body. It provides information on the sources, functions, and signs of toxicity for various vitamins including vitamins A, B, C, D, E, K, and folic acid. Toxic levels of these vitamins can cause issues ranging from bone and skin problems to neurological and gastrointestinal disorders. The key is maintaining balanced vitamin intake within recommended daily amounts.
Vitamins
Vitamins are essential nutrients that support growth, maintenance and regulation of bodily processes. There are 13 vitamins that are divided into fat-soluble and water-soluble categories. Fat-soluble vitamins include A, D, E and K which are stored in the body and have different deficiency and toxicity symptoms compared to water-soluble vitamins like C and the B vitamins which are not stored and require more regular intake. A balanced diet with variety is important to obtain the necessary vitamins, while too little or too much of certain vitamins can cause harm.
Vitamins
Vitamin A is a fat-soluble vitamin that exists in several forms and has important functions in vision, cell growth, reproduction, and immune function. It helps cells reproduce normally and is essential for good vision, embryo development, and keeping skin and mucous membranes healthy. A deficiency can cause night blindness, skin issues, and even blindness, while an overdose during pregnancy can cause birth defects. Vitamin A is found in foods like liver, sweet potatoes, carrots, and dark leafy greens.
Vitamin fat soluble bph class
This document discusses the fat soluble vitamins A, D, E, and K. It provides details on their dietary sources, functions, deficiency and toxicity symptoms. The key points are:
- Vitamins A, D, E, and K are fat soluble and absorbed with fat. They are stored in the liver and adipose tissue.
- Vitamin A supports vision, cholesterol synthesis, reproduction and iron transport. Deficiency causes night blindness and dry eyes. Toxicity above 7.5 mg/day can damage the liver and cause birth defects.
- Vitamin D facilitates calcium absorption and bone mineralization. Deficiency causes rickets in children and osteomalacia in adults. Toxicity leads
Vitamins.pdf
This document discusses vitamins and provides information on their classification, properties, functions, deficiencies and sources. It classifies vitamins as either fat-soluble (A, D, E, K) or water-soluble (C, B complex). Key points covered include that vitamins are organic compounds required in small amounts for metabolic reactions, deficiencies can cause disorders, and they were named by Casimir Funk in 1912. The document then goes into detail about each individual vitamin, their roles and deficiency symptoms.
VITAMIS
This document provides information about vitamins. It discusses that vitamins are essential for life, growth, maintenance and regulating body processes, but do not provide energy. The 13 vitamins are categorized as fat-soluble or water-soluble. Fat-soluble vitamins include A, D, E and K, and are absorbed with fats and stored in the body. Water-soluble vitamins are not stored and include all B vitamins and vitamin C. The document then goes on to provide details about specific vitamins including food sources, functions, deficiency and toxicity symptoms.
fat soluble vitamins
This document provides an overview of vitamin K. It discusses the functions of vitamin K, which include its role in calcium binding proteins and the coagulation cascade. It notes the dietary sources of vitamin K, including green vegetables, and recommends dietary allowances ranging from 2 mcg in infants to 120 mcg in adult men. Vitamin K deficiency can cause bleeding disorders due to inadequate gamma-carboxylation of clotting factors.
Fundamentals of Diet-Nutrition-Menu Planning
Food?
Anything eaten or drunk which can be ingested, digested and absorbed by the body.
Used as:
Energy Source
Building, repair or protective material
Nutrition?
“Food at work”
Process by which all body parts receive and utilize nutrients
Nutrients?
Components or Chemicals in food needed to grow, reproduce and lead healthy life
Macro Nutrients
Carbohydrates
Proteins
Fats
Water
Micro Nutrients
Vitamins
Minerals
Vitamins
This document summarizes information about various vitamins. It discusses fat soluble vitamins A, D, E, and K and water soluble vitamins B1, B2, C, and P. For each vitamin, the document outlines sources, properties, functions, deficiency symptoms, and in some cases important related health conditions. The document provides a high-level overview of the key details about these essential micronutrients.
Vitamin d
Vitamin A was discovered in the early 20th century when it was found that cooked liver or butterfat could cure night blindness. It is fat soluble and plays important roles in vision, epithelial cell maintenance, bone remodeling, and reproduction. Vitamin A deficiency can cause xerophthalmia, an abnormal dryness of the eyes, and keratomalacia, a softening of the cornea that can lead to blindness. Recommended dietary allowances are set to prevent deficiency symptoms.
Vitamin A deficiency,by,Dr.M.Mahboob
Vitamin A deficiency (VAD) can cause xerophthalmia and increases risk of infection. The document discusses vitamin A's physiology, clinical manifestations of deficiency, diagnosis, epidemiology, treatment and prevention. Deficiency is common where diets lack animal foods or dark green vegetables. Symptoms range from night blindness to corneal ulceration and blindness. Universal distribution of vitamin A supplements helps control VAD. While deficiency harms health, excess intake can also be toxic, causing bone and skin issues.
Vitamin A & D
Vitamin A and D are fat-soluble vitamins that serve important functions. Vitamin A promotes good vision and skin health, and supports reproduction. Major food sources include animal products and carotenoids from plants. Vitamin D helps absorb calcium for bone health and is synthesized from sun exposure, with some foods like fatty fish and fortified milk providing it. Deficiencies can cause vision problems or rickets, while excesses pose health risks. Both vitamins are stable to cooking but may degrade during long storage.
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Vitamin a
- 2. WHAT TO EXPECT..... Introduction other names types structure sources funtions hypervitaminosis deficiencies references closing prayers
- 4. VITAMIN A A yellow, fat-soluble, solid terpene alcohol, obtained from carotene and occurring in green and yellow vegetables, egg yolk, etc.: essential to growth, the protection of epithelial tissue, and the prevention of night blindness.
- 5. OTHER NAMES OF VITAMIN A 3-Dehydroretinol, Acétate de Rétinol, Antixerophthalmic Vitamin, Axerophtholum, Dehydroretinol, Oleovitamin A, Palmitate de Rétinol, Retinoids, Retinyl Palmitate, Vitamin A Acetate, Vitamin A Palmitate, Vitamin A1, Vitamin A2, Vitamine Liposoluble, Vitaminum A. Rétinoïdes, Rétinol, Retinol Acetate,
- 6. TYPES OF VITAMIN A There are basically two types of vitamin A -Vitamin A1:- A yellow crystalline compound, C20H30O, extracted from egg yolks, milk, and cod-liver oil. -Vitamin A2:- A golden yellow oil, C20H28O, occurring chiefly in the livers of freshwater fish and having about 40 percent of the biological activity of vitamin A1
- 7. Vitamin A constitute both retinol , which is a pre-formed vitamin and beta – carotine which is a pro- vitamin which is converted into retinol in intestinal mucosa. The international unit is used for the measurement , IU. 1IU= 0.3MICROGRAMS OF RETINOL.
- 9. SOURCES OF VITAMIN A IN ANIMALS.... -liver -cheese -milk -meat -egg -butter -fish IN PLANTS -mango -papaya -carrot -spinach -pumpkin -amarath
- 11. FUNCTIONS Vision Gene transcription Immune function Embroyonic development and reproduction Bone metabolism Haematopoieses Skin health Antioxidant activity
- 13. HYPERVITAMINOSIS A ACUTE:- caused by taking too much vitamin A over a short period of time CHRONIC:- occurs when too much of the vitamin A is present over a longer period
- 14. SYMPTOMS Abnormal softening of the skull bone (craniotabes -- infants and children) Bone pain or swelling Bulging fontanelle (infants) Changes in consciousness Decreased appetite Dizziness Drowsiness Headache Increased intracranial pressure Irritability Liver damage Nausea Poor weight gain Skin and hair changes Cracking at corners of the mouth Higher sensitivity to sunlight Vision changes
- 15. TESTS AND EXAMS Bone x-rays Blood calcium test Cholesterol test Liver function test Blood test to check vitamin A levels
- 16. DEFICIENCY OF VITAMIN A rickets blindness xeropthalmia keratomalacia bitot's spot follicullar hyperkeratosis xerosis conjunctiva xerosis cornea
- 17. XEROPTHALMIA dryness of tear glands symptoms include night blindness and eye irritation
- 18. KERATOMALACIA drying and clouding of the cornea
- 19. BITOT'S SPOT buildup of keratin debris on the conjunctiva
- 20. REFERENCES 'Discovery' of Vitamin A.". Annals of Nutrition and Metabolism 61 (3): 192–198. doi:10.1159/000343124. http://en.wikipedia.org/wiki/Vitamin_A http://www.news-medical.net/health/Vitamin-AFunctions.aspx http://www.nlm.nih.gov/medlineplus/ency/article/ 002400.htm http://www.vivo.colostate.edu/hbooks/pathphys/ misc_topics/vitamina.html http://www.ext.colostate.edu/pubs/foodnut/0931 5.html
Editor's Notes
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