What studies have got to do with it…

... Few things are as confusing and as unpredictable as the human body. And this fact reflects clearly in a number of studies that have been published this month. Lowering fat intake doesn''t alter risk of heart trouble and colorectal cancer, estrogen therapy good for women in their 50s but not for the others, calcium and vitamin D supplements do little to prevent fractures other than those of the hip, but increase chances of kidney stones and so on and so forth. ...