The main form of vitamin E found in supplements and fortified foods is alpha-tocopherol, which exists in several natural forms, including d-alpha, d-beta, d-delta, and d-gamma tocopherols.
In addition to alpha-tocopherol, vitamin E also includes tocotrienols, which have similar antioxidant properties but with a slightly different chemical structure.
Benefits
- Protecting cells from oxidative stress
- Supporting immune function
- Promoting skin health
Precautions
- Precautions should be taken when consuming vitamin E supplements, as excessive intake can lead to bleeding problems, particularly in individuals taking blood-thinning medications.
Fun fact
Vitamin E is unique among fat-soluble vitamins because it doesn't accumulate in the body like vitamins A, D, and K. Instead, excess vitamin E is excreted through urine, making it less likely to reach toxic levels even with prolonged supplementation. This characteristic sets it apart from other fat-soluble vitamins and highlights its relatively safe profile when consumed within recommended levels.
References
- National Institutes of Health, Office of Dietary Supplements. (n.d.). Vitamin E - Health Professional Fact Sheet. Office of Dietary Supplements. https://ods.od.nih.gov/factsheets/VitaminE-HealthProfessional/