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.