Physiology

Hormones Metabolism Body Functions Thermoregulation Circadian Rhythms Nervous System Human Body Bone Health Cardiovascular Health Body Temperature

Major Study Ties 6.4–7.8 Hours of Nightly Sleep to Slower Biological Aging

Researchers urge trials before sleep guidance changes.

Yawning May Help Flush the Brain, MRI Study Finds

Fruit Flies Endure Up to 13G, Then Recover, UC Riverside Study Finds

Coffee Alters Gut Microbes and Mind, Peer-Reviewed Study Finds

Single Finnish Sauna Session Temporarily Raises White Blood Cells, Study Finds

Double Shifts Tied to Double Midnight Cortisol in Nurses, Peer-Reviewed Study Finds

Sleep Experts Emphasize Regular Wake Times as New Study Points to Yoga’s Promise

Magnesium Supplement Guidance Stresses Caution on Dose and Diarrhea Risk

Scientists Map Gut-to-Brain Circuit That Cuts Appetite During Parasite Infection

Doctors Outline Non-Food Causes of Blood Sugar Spikes

Italian Spas Spotlight Evidence Linking Thermal Baths to Better Sleep on World Sleep Day

Cardi B Uses Oxygen Backstage After Denver Show, Cites Mile-High Air

Doctors Warn Against Powering Through Colds as New Guidance Flags Complication Risks

Ultramarathons Push Red Blood Cells Toward Accelerated Aging, Study Finds

‘Dark Showering’ Spreads Online as Sleep Science Lends Plausible Support

Hamate Fractures Sideline Lindor, Carroll and Holliday as MLB Camps Open

Stadium Attendance Triggers Stronger Heart and Stress Responses, Bielefeld Study Finds

Sleep Apnea Explained: Missed Signs, Health Risks, and Fast Gains From Treatment

Eggs Positioned as Practical Support for People Coming Off GLP-1 Weight-Loss Drugs

Stanford Study Identifies 78 as Onset of Old Age and Three Stepwise Shifts in Aging