Today, women suffering from uterine factor infertility who wish to start a family have only two options: adoption or surrogacy. But following an upcoming trial at the Cleveland Clinic, women may be able to give birth after undergoing uterus transplant surgery.

On the Today show, actor Charlie Sheen told the world that he is HIV-positive. This was once considered a death sentence. However, it is now possible to manage this chronic disease, and nearly eliminate the risk of transmission by suppressing the viral load. Here's an explanation on how that's done.

A new Swedish study shows improved survivability in relatively young heart patients opting for mechanical valve replacement, versus those receiving the bioprosthetic version. This validates previous evidence supporting the use of mechanical heart valves in middle-age patients.

The U.S. Department of Justice is now finally doing what the FDA has been prevented from attempting in the past -- it's taking down makers and sellers of supplements, pursuing criminal and civil charges stemming, in part, from unlawful advertising practices.

In another case of science versus politics, it's Dr. David Seres squaring off with Utah Sen. Orrin Hatch on the topic of supplements. Who should we believe, an ethical physician focused on improving public health or a career politician whose state has become a hotbed for sleazy supplement companies hawking dangerous products?

A recent Boston Globe article about flu vaccinations raised the notion that those who receive a flu shot every year to have less protection than those who get it less frequently. What does science make of this? It's hard to say. But we say that some protection is better than none at all.

Proton pump inhibitors are the third most common doctor-recommended medication in the U.S., with over 19 million prescriptions written annually. A recent study says that routine use in a hospital setting can lead to an increase in mortality from pneumonia and C. diff infection, a deadly gut bacteria.

A new study just published in the journal Reproductive Toxicology warns that chemicals commonly found in cleaning products quartenary ammonium compounds can reduce fertility. But there are problems with this study. Here's what we found.

A recent study by researchers at Johns Hopkins revealed a greater prevalence of erectile dysfunction, also known as ED, among men with vitamin-D deficiency. Further investigation is needed to see if optimizing this vitamin level could be used to prevent ED from developing.

The FDA has decided to let snus remain on the market.