Word: tocopherols
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Vitamin C, 200 mg a day; vitamin E, 400 IUs of natural mixed tocopherols (d-alpha-tocopherol with other tocopherols or, better, a minimum of 80 mg of natural mixed tocopherols and tocotrienols...
...supplements can provide optimum dosages of natural therapeutic agents that may help prevent and treat age-related diseases. Consider vitamin E. Oil-rich seeds and nuts are the main food source of it. Many studies suggest that doses in the range of 200 IUs to 400 IUs of alpha-tocopherol (or, better, 80 mg to 160 mg of the whole complex, including tocotrienols) offer the best antioxidant protection against common age-related diseases. Nuts are good for you, but you would have to eat far too many to get that amount of vitamin...
Like vitamin A, vitamin E is found in several forms, with alpha-tocopherol being the most biologically active. Because alpha-tocopherol isn't terribly stable, however, most cosmeceuticals contain derivatives. Although some of these compounds are converted to the active form in the skin, it's unclear whether they have an effect. Even if you find a cream with alpha-tocopherol in it, there's no definitive word on how strong it should be, according to Dr. Karen Burke, a dermatologist who consults for L'Oreal's Helena Rubinstein division. However, Burke's experiments with mice suggest that vitamin...
...products until 10 years ago, when his wife, then 53, started worrying about the effects of hot flashes on her thinning skin. In response, he developed the Menopause Skin Cream, which uses urea--a common humectant--as a cooling agent. His solution to the vitamin E problem: encapsulate alpha-tocopherol in tiny little sacks of sugar molecules that are activated by body heat...
...micrograms for selenium, and an upper limit of 400 micrograms per day (not an upper limit of 55 micrograms per day). Exceeding the upper limit can lead to hair loss and brittle nails, not to the loss of fingernails. And finally, the upper level for dl-alpha-tocopherol, a synthetic form of vitamin E, is not 700 mg a day, but 1,000 mg, which is equivalent to 1,100 IU (international units). NORMAN I. KRINSKY Department of Biochemistry Tufts University School of Medicine Boston...