Male runners who do not receive enough energy from their diet may be at risk for stress fractures, reveals a new study to be presented at the Endocrine Society's annual meeting in Atlanta, Ga. 

"Our findings indicate that male runners, including recreational runners, should be counselled on the importance of adequate nutrition and caloric intake to optimize hormones, body composition, and bone health and to prevent stress fractures," said lead researcher Melanie S. Haines, M.D., of Massachusetts General Hospital in Boston, Mass.