A new study shows that people who have irregular sleep patterns may have a greater chance of developing dementia than those who have more regular sleep patterns. When sleep becomes irregular, the ...

Study identifies five depressive symptom trajectories, with stable-high and increasing patterns significantly raising the risk of all-cause mortality. Study: Association between the depressive symptom ...

A new study shows Earth is getting brighter at night due to rapid urbanization and industrial growth, while wars, disasters, ...