Vitamin E deficiency

Nature

Vitamin E deficiency in humans is a very rare condition, occurring as a consequence of abnormalities in dietary fat absorption or metabolism rather than from a diet low in vitamin E. Collectively the EARs, RDAs, AIs and ULs for vitamin E and other essential nutrients are referred to as Dietary Reference Intakes (DRIs). Vitamin E deficiency can cause nerve problems due to poor conduction of electrical impulses along nerves due to changes in nerve membrane structure and function.

Source: Wikipedia

Claim 
1. Taking dietary supplements of vitamin E reduces the risk of heart attack. It is therefore likely that a deficiency of vitamin E increases the risk of heart attack. < 2. Vitamin E strengthens the immune system in older people and reduces infection-related illnesses.
Counter-claim 
A 2000 study of more than 11,000 heart attack survivors reported that Vitamin E had no effect.
Value(s) 
Type 
(G) Very specific problems