before people with family history of dementia start taking a bunch of vitamin E, just keep in mind that this is a lipid-soluble vitamin. Unlike Vitamin-C, which if you were Linus Pauling you could take several thousand milligrams a day and still be okay because you just pee out much of the excess, Vitamin-E can store up in your tissues and cause some health problems. Some studies suggests it will screw around with your cholesterol levels and can actually counteract the positive effects of cholesterol lowering drugs like the statins.

Bottom line - Vitamin E is very good for you, but larger doses probably only beneficial in short-term, not long term.