A genetic analysis of over 250,000 people finds 15 areas of the genome that are associated with muscle weakening with age, which could drive new therapeutic interventions for muscle loss.

Over one-third of people taking the new drug semaglutide experienced body weight reduction by 20% or more; 75% of people who took it lost more than 10%.

The risk of dementia is doubled among older adults who sleep less than 5 hours per night regularly, compared to those who sleep 7-8 hours.

A computational model calculates 'skeletal age', predicting someone's risk of bone fracture and premature death. Fractures increase the risk of premature death by about 50% in both men and women.