What it does
Vitamin E helps protect cell membranes from oxidative damage and participates in immune and cellular functions. Severe deficiency is uncommon in generally healthy people but can occur with certain fat-malabsorption disorders.
Food sources and absorption
Nuts, seeds, wheat germ, and vegetable oils are prominent sources. Spinach, broccoli, and fortified foods can also contribute.
Safety and individual context
High-dose supplements can interact with anticoagulant or antiplatelet medicines and may increase bleeding risk. Supplements should not be assumed to prevent chronic disease merely because vitamin E functions as an antioxidant.
Primary reference
NIH Office of Dietary Supplements consumer fact sheet
How to use this information
Reference values describe population needs and are not a diagnosis. Food patterns, health conditions, pregnancy, laboratory results, and medications can change what is appropriate. Avoid high-dose supplementation unless there is a clear reason and qualified guidance.