Vitamin E
Overview:
Vitamin E is a fat-soluble vitamin known for its antioxidant properties. It helps protect cells from oxidative stress and supports immune function, skin health, and eye health. The most active form in humans is alpha-tocopherol.
Sources:
Vitamin E is found in various foods, including vegetable oils (such as wheat germ, sunflower, and safflower oils), nuts, seeds, green leafy vegetables, and fortified cereals. It is also available in supplement form.
Functions:
Antioxidant Protection: Vitamin E acts as a powerful antioxidant, protecting cells from damage caused by free radicals, which can lead to chronic diseases and aging.
Immune Support: It enhances immune response by supporting the function of T-cells, a type of white blood cell.
Skin Health: Vitamin E promotes skin health by protecting against UV damage and improving skin hydration and elasticity.
Deficiency:
Vitamin E deficiency is rare but can occur in individuals with fat-malabsorption disorders. Symptoms include muscle weakness, vision problems, immune system impairment, and neurological issues such as unsteady walking.
Toxicity:
High doses of vitamin E supplements can increase the risk of bleeding due to its anticoagulant effects, especially in individuals on blood-thinning medications. The tolerable upper intake level for adults is 1,000 milligrams (or 1,500 IU) of alpha-tocopherol per day.