For years we've had it beat into our heads that because sunlight causes skin cancer, we should avoid the sun and, when in it, use sunscreen. Now we're getting more nuanced advice because of concerns about vitamin D deficiency.
As we learn more about fat, we're discovering that it plays a variety of roles in the body's complex web if chemical interactions It's not simply a passive storehouse for extra calories, but rather an active organ.
A recent debate in the fields of bioethics surrounding novel treatments for an uncommon genetic disorder has raised the question: Is it ethical to attempt to predetermine the sexual orientation of one's children?
Some have raised the question as to whether soy products are safe. The biggest question was whether they affect the risk of breast cancer and, for women with breast cancer, if they help chances for survival.