Late night snacks might add extra pounds

September 3, 2009 A new study finds the body's internal clock or circadian rhythm may play a role in metabolism.

Northwestern University researchers say they have found casual evidence that eating during the "wrong" circadian time leads to weight gain in mice.

Scientists reporting in the Journal of Obesity say they believe this study can be used as a guide for humans to avoid eating during their normal sleeping phase because it could lead to weight gain.