VitaminA and vitamin E are the fat-soluble vitamins, which are necessary for good health. They have an important role as an antioxidant in preventing damage of cells by free radicals. Appropriate amounts of both vitamins are important for good eyesight, the proper function of the immune, skeletal, respiratory and reproductive systems, and connective tissue (skin, hair and nails).
Vitamins A and E are essential for optimal functioning of the immune system, healthy eyes and skin, and protect the entire body. Also, they are associated with the prevention of many diseases. Therapeutic benefits are:
Prevention and treatment of cancer - Vitamins A and E are known antioxidants that contribute to reducing the risk of cancer of the gastrointestinal system, cervix, prostate, lung and breast cancer. As adjunctive therapy in the treatment of cancer have been shown that they inhibit the growth of prostate tumors and induce self-destruction of cancer cells. It is believed that high doses of antioxidants can increase the effectiveness of radiation therapy, and at the same time can protect healthy cells from damage.
Protecting the immune system - Vitamins A and E strengthen the function of the immune system.
Stimulation of regeneration of the skin and mucous membrane - shorten the time of prolonged cough after respiratory tract infections.
Skincare - It is believed that vitamins A and E increase tolerance to UV rays. They also slowed the appearance of wrinkles and spots on the skin. Also, they are used in the treatment of wounds to heal them faster. Have a favorable effect on the growth of hair and nails.
Prevention of eye diseases - supplement therapy with vitamins A and E significantly reduced the risk of cataracts and macular degeneration.
Treatment of liver diseases - Vitamins A and E can protect the liver from diseases.
Treatment of diabetes - vitamins A and E can help patients with diabetes to utilize insulin more efficiently. Also, it is shown that they are effective and for the treatment of diabetic neuropathy.
Fertility - Vitamins A and E improve sperm function and reproductive system in general.
Deficiency of vitamins A and E
Lack of these vitamins is more likely to occur in people who are malnourished, as alcoholics, the chronically ill, and those with impaired absorption of fat and suffering from type 1 diabetes, in whom the disease is not well controlled.
Vitamin E is generally well tolerated and side effects are rare. But at some people who have a deficiency of vitamin K, vitamin E can increase the risk of bleeding. An overdose of vitamin E (536 mg over) can cause nausea, diarrhea, headache, abdominal pain, bleeding, high blood pressure and fatigue.
An overdose of vitamin A can cause dry lips and skin, pain in bones and joints, diarrhea, vomiting, headaches, blurred or double vision, confusion, irritability and fatigue. Symptoms are usually reversible, but we should seek medical advice. It is particularly important to avoid overdose during pregnancy because it may cause miscarriage and fetal malformations. Patients with kidney disease are also at high risk for vitamin A toxicity and should not take vitamin A supplements without consulting their doctor.
Vitamin A supplements should not be taken with other retinoid drugs because of the high risk of toxicity. A diet with low fat intake impairs absorption of all liposoluble fats, including vitamins A and E.
Mineral oils and antacids containing aluminum, as well as medication to lower cholesterol also inhibit absorption of vitamins A and E. Many substances are reducing stocks of these vitamins, including alcohol, barbiturates, caffeine, cortisone, tobacco etc..
Surveys in children and pregnant women with iron deficiency anemia have shown that this condition is better treated with a combination of iron supplements along with supplements of vitamins A and E than just iron supplements, given that inorganic iron supplements has revoked effect of vitamin E.
Persons who are on anticoagulant or anticonvulsant therapy should consult a doctor before starting using vitamin E supplements.