David Sinclair says aging is a disease that can be prevented and treated, and there is no reason life must end. The evidence he presents from scientific studies is intriguing, but far from definitive.
Naturopath Barbara O'Neill has been banned in Australia for spreading dangerous lies about health.
A new fad, drinking hydrogen water, claims to provide all kinds of health benefits. The scientific evidence isn't there.
Science has made great strides in understanding, treating, and preventing HIV/AIDS. We can hope for an AIDS vaccine, but meanwhile there is a pill that can markedly reduce the risk of becoming infected.