Viagra's Hidden Uses: Diet Pill, Cancer Fighter?

Viagra may have a future well beyond erectile dysfunction. Someday, we could perhaps see it prescribed for weight loss—or even to combat cancer, in combination with green tea. Scientists know that mice have lower rates of obesity, despite fatty diets, when they're on the drug. Now, researchers in Germany have an idea why: Viagra plays a role in turning white fat cells—a factor in overweight humans' "spare tires"—into beige ones, which burn energy, the New York Times reports. Meanwhile, researchers in Japan have found that the drug may be handy in fighting cancer, if it's taken with a dose of...