A9. The following appeared in an article in a health and fitness magazine. “A recent study of balding men revealed that 80% had higher than normal levels of the chemical compound DHT in their bodies. A second study discovered that rats fed a diet high in animal fats produced elevated levels of the same chemical. In this second study, however, one group of rats did not produce DHT when they also ate portions of wheat germ — a food rich in vitamin E — along with the other foods high in animal fat. Viewed together, these studies show that the best way to maintain healthy hair and scalp is to reduce fat consumption sharply and to take daily vitamin E supplements.” 1statistical correlation does not guarantee a causal relationship. 2Other factors that may contribute to the bald head should be considered and ruled out. 3One of the crucial assumptions of the author is based on a false analogy. 4According to the preceding reasons the final suggestion of the author is also doubtful.
3.these studies show that the best way to maintain healthy hair and scalp is to reduce fat consumption sharply and to take daily vitamin E supplements.”令人不解的错误因果关系，缺少证据
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发表于 2005-6-12 21:50:00
发表于 2005-6-13 11:05:00
