A new meta-analysis combining 22 studies, to be presented at the Annual Meeting of the European Association for the Study of Diabetes (EASD) in Hamburg, Germany (2–6 October), shows that tirzepatide is superior to semaglutide for both control of blood sugar and in terms of amount of body weight lost by patients. The study is by Dr. Thomas Karagiannis, Aristotle University of Thessaloniki, Thessaloniki, Greece, and colleagues.

Surgeons have transplanted a pig's heart into a dying man in a bid to prolong his life—only the second patient to ever undergo such an experimental feat. Two days later, the man was cracking jokes and able to sit in a chair, Maryland doctors said Friday.

A new study has found people who sleep badly are also more likely to be obese.