Preventing Cancer
If your family has had a history of cancer, the mutated gene which causes cancer may have been passed down. If your family has had a history, you may get a genetic test. Remember that if your family has had a history of cancer it is not certain that you will have it.
Signs of Skin Cancer
In contrast, in Africa, which is near the equator, blacks require intense sunlight to penetrate their dark skin to make Vitamin D. This is all well and good.