Dr_Dickie said:Ignoramus24806 said:http://www.reuters.com/newsArticle.jhtml?type=healthNews&storyID=7910550
CHICAGO (Reuters) - Daily vitamin E supplements do not prevent cancer,
strokes or heart attacks in older people with vascular disease or
diabetes, and may increase their risk of heart failure, a study said
on Tuesday. [...]Haven't seen this study yet, so take this with a grain of salt--I'll
try to get to it this weekend. Most every study I have seen
involved the application of alpha tocopherol (actually d-L alpha
what is commonly called vitamin E). Real vitamin E is a mixture of
alpha, beta, and gamma tocopherols (actually 8 different isomers in
all). When given 10X the recommended dose of a single isomer it
displaces the others and can lead to some problems.
The study IS about d-alpha. That's the point of the study. Most people
do take d-alpha, not mixed tocopherols and it makes perfect sense to
examine its long term effects since lots of data is available. This is
all acknowledged in their JAMA article.
"Other potential mechanisms of harm associated with vitamin E
supplements in doses much higher than those provided by balanced diets
may relate to displacement of other fat-soluble antioxidants, such as
lambda-tocopherol, disrupting the natural balance of antioxidant
systems and a reduction in high-density lipoprotein
(HDL2)cholesterol."
DZ