These findings should have been glaringly apparent to those involved in the SELECT human clinical trial that began one year later (in 2001), yet the SELECT study design called for men to be given a high dose of synthetic alpha tocopherol
that resulted in depletion of vital gamma tocopherol by 45% during the initial 5.
62 per cent respectively, whereas the alpha tocopherol
and Se concentrations were 13.
3 percent in the alpha tocopherol
group compared with 9.
Studies show that levels of gamma tocopherol are a better predictor of lower heart attack risk than alpha tocopherol
Although there were no associations between baseline serum carotenoids or alpha tocopherol
concentrations and incidence of BCC or SCC, baseline serum selenium concentrations showed strong inverse associations with both BCC and SCC tumor incidence.
The synthetic version, manufactured from petroleum products, is labeled as "dl alpha tocopherol
000 IU/day of alpha tocopherol
, 20 mg/day of memantine, the combination or placebo.
Synthetic alpha tocopherol
shown to increase prostate cancer risk.
4), (5) It is now recognized that gamma tocopherol, like alpha tocopherol
, is retained in the body and delivered to tissues.
Natural Vitamin E is identified on labels as "d alpha tocopherol
This might account for the null effects of alpha tocopherol
supplementation in Mild Cognitive Impairment and Alzheimer's Disease.
She cited a recent Canadian study which showed that "the body absorbs twice as much natural alpha tocopherol
-- the common type of Vitamin E in supplements -- as synthetics.
Consumers have been advised to read labels closely -- natural Vitamin E will read "d alpha tocopherol
," while the synthetic version reads "dl alpha tocopherol
In the SELECT study used to discredit alpha tocopherol
-selenium, the use of aspirin or ibuprofen by the placebo group may have reduced the prostate cancer risk more than what could be expected in those receiving alpha tocopherol
and selenium who may not have been taking as much aspirin or other NSAIDs.
Natural Vitamin E can be identified by a bottle's label describing it as "d alpha tocopherol