"Vitamin D tests conducted on a group of University of Toronto students have found that virtually all non-whites had insufficient levels of the sunshine vitamin, putting them at elevated risk of debilitating diseases such as osteoporosis, cancer and diabetes.

The research, which is awaiting publication in a medical journal, found that 100 per cent of those of African origin were short of vitamin D, as were 93 per cent of South Asians (those of Indian or Pakistani origin), and 85 per cent of East Asians (those of Chinese, Indochinese or Filipino origin, among other countries)." (The Globe and Mail)