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To further muddy the waters, there was also a study that showed that testosterone levels were actually increased with megadoses (438 mg/day) of Vitamin E.  However, this study had no control. Plus,. I would urge caution at megadosing alpha-tocopherol, because yet another study showed a decrease in thyroid hormones with megadosing.  One study even showed a slight risk in lung cancer for those taking Vitamin E. 
To further muddy the waters, there was also a study that showed that testosterone levels were actually increased with megadoses (438 mg/day) of Vitamin E.  However, this study had no control. Plus,. I would urge caution at megadosing alpha-tocopherol, because yet another study showed a decrease in thyroid hormones with megadosing.  One study even showed a slight risk in lung cancer for those taking Vitamin E.