All signs point to pregnancy: increased appetite, a bulging belly and an ultrasound that shows a growing fetus. But the patient, Lee Mingwei, is a man.

The Future of Diagnosis
2015: Get Fit Without Moving a Muscle
Joan Vernikos, Pharmacologist and NASA Consultant

A new study shows that overweight people lose about as much muscle mass in 10 years—10 percent—as astronauts do on extended space missions. Now physicians are fighting fat with the NASA-inspired human centrifuge, a spinning platform that doubles the gravitational load on the body, stimulating metabolism and forcing muscles to contract.