Vitamin D sufficiency, along with diet and exercise, has emerged as one of the most important deficiency disease preventive factors in human health. Literally hundreds of studies now link vitamin D deficiency with significantly higher rates of many forms of cancer‚ as well as heart disease‚ osteoporosis‚ multiple sclerosis and many other conditions and diseases.
I play devil's advocate here only to drive home the point: we need biological manipulation to make sport a spectacle. In fact, I will rephrase that: sport IS biological manipulation. The more pertinent question is to what extent is biological manipulation fair? And can we justify accepting certain forms but not others?