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Caffeine
- 1. Caffeine
- 2. Outline • What is Caffeine? • Sources of Caffeine • What is Caffeine Sensitivity? • Effects of Caffeine • Health Benefits of Caffeine • Caffeine Moderation
- 3. What is Caffeine? • In the context of chemistry, caffeine is a bitter, white crystalline purine, a methyl xanthine alkaloid, and thus closely related chemically to the adenine and guanine contained in deoxyribonucleic acid. • In the context of health, caffeine is defined as a drug because it stimulates the central nervous system, causing alertness. • Caffeine is defined as the most psychoactive drug in the world.
- 5. Sources of Caffeine • Caffeine is naturally found in certain leaves, beans, and fruits of over 60 plants worldwide. Its bitterness acts as a deterrent to pests. • The most common sources in our diet are coffee, tea leaves, cocoa beans, cola, chocolate, and energy drinks. Caffeine can also be produced synthetically and added to food, beverages, supplements, and medications.
- 7. What is Caffeine Sensitivity? • Caffeine sensitivity is the amount of caffeine needed that will produce an effect in someone. • It varies from person to person. In general, the smaller the person, the less caffeine needed to produce side effects. • Caffeine sensitivity is most affected by the amount of caffeine a person has daily. People who regularly take in a lot of caffeine soon develop less sensitivity to it. This means they may need more caffeine to achieve the same effects.
- 8. Effects of Caffeine • Some of the short-term effects are: • Low doses (130 mg-300 mg) • Increased alertness • Temporary energy boost • Elevated mood
- 9. Effects of Caffeine • High doses (above 400 mg) • Anxiety • Dizziness • Headaches • Jitters • Increased urination (because caffeine is a mild diuretic) • Tolerance
- 10. Effects of Caffeine • Some long term effects are: • Interference with normal sleep • Loss of calcium which may result in osteoporosis • Aggravation of certain heart problems
- 11. Effects of Caffeine • A person may become caffeine-dependent. These are the following symptoms: • Tolerance • Withdrawal symptoms (irritability, depressed mood, etc.) • Substance often taken in larger amounts or over a longer period than expected • persistent desire or unsuccessful efforts to cut down or control use • use continued despite knowledge of a persistent or recurrent physical or psychological problem likely to have been caused or exacerbated by the substance.
- 12. Health Benefits of Caffeine • Caffeine has few proven health benefits. • Limited evidence suggests caffeine may also reduce the risk of the following: • Parkinson's disease • Liver disease • Colorectal cancer • type 2 Diabetes • Dementia • BUT REMEMBER! Too much caffeine intake causes harmful effects in your body.
- 13. Caffeine Moderation • Drinking a moderate amount of caffeine isn't likely to cause dehydration, but it's probably a good idea to stay away from too much caffeine in hot weather, during long workouts, or in other situations where you might sweat a lot • Caffeine is usually thought to be safe in moderate amounts.
- 14. Caffeine Moderation • Experts consider 200-300 mg of caffeine a day to be a moderate amount for adults. But consuming as little as 100 mg of caffeine a day can lead a person to become "dependent" on caffeine. This means that someone may develop withdrawal symptoms (like tiredness, irritability, and headaches) if he or she quits caffeine suddenly. • Teens should try to limit caffeine consumption to no more than 100 mg of caffeine daily, and kids should get even less.
- 15. Sources • http://kidshealth.org/teen/food_fitness/nutrition/caffeine.html • http://www.medicinenet.com/caffeine/article.htm • coffeeandhealth.org/topic-overview/sources-of-caffeine