Like millions of other Americans, Kelsey Hameister's mood is impacted by the change of seasons. Two in every five say their ...

The scientists conducting this multiyear study want to know how prolonged changes to circadian rhythms—the internal processes that follow a roughly 24-hour cycle—may affect metabolism and body weight ...

Seasonal changes can impact your mood, energy levels, and mental well-being—learn how to manage seasonal mood shifts with ...