The Healthspan Map · Nutrient

Vitamin E

Linked to getting too little

Where a shortfall of Vitamin E is linked — 13 sources.In the order the Map holds them: strongest evidence first. That is a statement about the evidence, not about what matters most.
Nutrient or lever	Direction	Strength	Evidence type	What was found	Source
Vitamin E	Eat enough of	Emerging	Review / narrative	Vitamin E deficiency can shorten red-cell survival (hemolysis).	Vitamin E & red-cell membranes (opens in a new tab)
Vitamin E	Eat enough of	Emerging	Review / narrative	Vitamin E is a brain antioxidant; correcting deficiency may benefit some cognitive measures (evidence emerging).	Linus Pauling Institute (opens in a new tab)
Vitamin E	Eat enough of	Emerging	Cohort / observational	Low vitamin E intake is associated with short sleep (antioxidant role; evidence observational).	NHANES 2005-2016 (opens in a new tab)
Vitamin E	Eat enough of	Emerging	Systematic review	Vitamin E protects muscle membranes from oxidative damage; deficiency is associated with lower knee and grip strength.	Nutritional supplements & sarcopenia (opens in a new tab)
Vitamin E	Eat enough of	Moderate	Review / narrative	Vitamin E deficiency causes a sensory peripheral neuropathy and ataxia.	Nutritional & toxic neuropathy (opens in a new tab)
Vitamin E	Eat enough of	Moderate	Review / narrative	Vitamin E neutralises reactive oxygen species in sperm plasma membranes; with vitamin C it reduces sperm DNA damage.	Diet & men’s fertility (Fertil Steril 2018) (opens in a new tab)
Vitamin E	Eat enough of	Emerging	Review / narrative	Vitamin E deficiency impairs immune function; adequacy supports antioxidant protection of immune cells, particularly in older adults.	Multivitamin-mineral & respiratory infection (PMC12310427) (opens in a new tab)
Vitamin E	Eat enough of	Moderate	Review / narrative	Vitamin E is a lipid-soluble antioxidant that protects skin lipids and supports elasticity and photoprotection.	Vitamin E & photoprotection (opens in a new tab)
Vitamin E	Eat enough of	Emerging	Review / narrative	Intermittent-hypoxia oxidative stress correlates with AHI and desaturation; vitamin E is among antioxidants studied to counter it (redox markers, not clearly AHI).	Oxidative-stress markers in OSA (PMC8321764) (opens in a new tab)
Vitamin E	Eat enough of	Emerging	Review / narrative	Vitamin E’s antioxidant action is among the nutrient factors examined for protecting thyrocytes in hypothyroidism/Hashimoto’s.	Micronutrients & autoimmune thyroid review (PMC12372124) (opens in a new tab)
Vitamin E	Eat enough of	Moderate	RCT / meta-analysis	Vitamin E, an AREDS antioxidant, is part of the proven nutritional therapy that slows advanced AMD.	Eye nutrition review (PubMed 26903189) (opens in a new tab)
Vitamin E	Eat enough of	Moderate	Review / narrative	Vitamin E is a key antioxidant that supports T-cell-mediated immunity, especially with age.	Vitamin E & T-cells (opens in a new tab)
Vitamin E	Eat enough of	Strong	RCT / meta-analysis	Vitamin E 800 IU/day improved liver histology in biopsy-proven NASH (PIVENS RCT); AASLD recommends it for non-diabetic steatohepatitis.	AASLD practice guidance on NAFLD (PMC10735173) (opens in a new tab)

Linked to getting too much

Where an excess of Vitamin E is linked — 5 sources.In the order the Map holds them: strongest evidence first. That is a statement about the evidence, not about what matters most.
Nutrient or lever	Direction	Strength	Evidence type	What was found	Source
Vitamin E	Don't overdo	Emerging	Review / narrative	Excess antioxidant supplementation including vitamin E may disturb the redox balance sperm need, potentially harming function.	Dietary antioxidants & male infertility – antioxidant paradox (PMC8003818) (opens in a new tab)
Vitamin E	Don't overdo	Moderate	RCT / trial	Even low-dose (50 mg/day) vitamin E raised pneumonia risk in certain male smokers (RR 1.61 at <60 kg; 2.34 at >100 kg) — a clear dose/context harm.	Vitamin E supplementation & pneumonia in smokers (ATBC, PMC2603040) (opens in a new tab)
Vitamin E	Don't overdo	Strong	Established clinical	High-dose alpha-tocopherol supplements inhibit platelet aggregation and antagonize vitamin K, raising bleeding/hemorrhage risk; UL 1,000 mg is set on this hemorrhagic potential.	NIH ODS – Vitamin E; StatPearls (opens in a new tab)
Vitamin E	Don't overdo	Moderate	RCT / meta-analysis	Two trials found increased hemorrhagic (brain) stroke risk with alpha-tocopherol supplements.	NIH ODS – Vitamin E (ATBC; Physicians' Health Study) (opens in a new tab)
Vitamin E	Don't overdo	Moderate	RCT / meta-analysis	The SELECT trial found high-dose vitamin E supplements significantly increased prostate cancer risk. (Cancer folded into system.)	NIH ODS – Vitamin E (SELECT trial) (opens in a new tab)