Vitamin E
In the ATBC cancer prevention trial, men given alpha-tocopherol (vitamin E) had a lower incidence of prostate cancer than men given a placebo. The vitamin E-treated group also had significantly lower death rates from prostate cancer.
However, newer studies from a trial called SELECT showed that taking vitamin E can actually be harmful. According to an article in JAMA October 12, 2011, updated research finds that men who took vitamin E were at a higher risk of developing prostate cancer by about 17 percent.
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- Vitamin K
particularly prothrombin and also factors VII, IX, and X. Vitamin K1 is made by plants, whereas vitamin K2 is of bacterial origin and is the important form for people. All other forms of vitamin K are converted to vitamin K2 in the body. There are a number of closely related compounds of the vitamin K2 […]
- Vitamin O
Not a true vitamin but rather a pricey health supplement that is composed largely of salt water (plus some germanium, a trace element dangerous to health). The US Federal Trade Commission (FTC) charged the manufacturer of Vitamin O with fraud for touting it as a cure for cancer and heart disease. The FTC said advertisements […]
- Vitamin P
An old name for substances now known as bioflavinoids. They are no longer considered to be vitamins by the strict definition of that word.
- Vitamin requirements, infant
Vitamins are organic substances that are essential in minute quantities for the proper growth, maintenance, and functioning of the baby. Vitamins must be obtained from food because the body cannot produce them. The exception is vitamin D, which can be produced by the skin when it is exposed to the sun. There are four fat-soluble […]
- Vitamin therapy
The use of vitamins to prevent or cure disease. Many physicians are now recognizing the beneficial uses of anti-oxidant and other vitamins for a wide variety of conditions, often as a complementary therapy to accompany medication or other treatments. One variant on this theme, megavitamin therapy, is still rather controversial. Always consult your doctor before […]