Sleep insomnia is more likely to affect people who have inconsistent sleeping patterns. 	Photograph: iStock

It’s normal to wake up a few times during the night, as the brain cycles through various stages of deeper and lighter sleep. Older people also often h(...)

Qiana Mosely: she joined the semaglutide trial and lost 40 pounds, about 15%  of her weight. Photograph: Taylor Glascock/The New York Times

For the first time a drug has been shown so effective against obesity that patients may dodge many of its worst consequences, including diabetes, rese(...)

Mayra Ramirez after her surgery. She was not told she’d had a lung transplant until several days after she woke up. ‘I couldn’t process it,’ she says. Photograph: The New York Times

The last thing that Mayra Ramirez remembers from the emergency room at Northwestern Memorial Hospital in Chicago is calling her family to say she had (...)

Moderate coffee drinking – three to five cups a day – has proven health benefits. Photograph: iStock

We’ve come a long way as coffee drinkers, with our oat milk lattes, cold brews and Frappuccinos. Some of us are still very utilitarian about the drink(...)

There are potential hazards. A radiologist who misreads a scan may harm one patient, but a flawed AI system in widespread use could injure many. Photograph: Getty

Computers were as good or better than doctors at detecting tiny lung cancers on CT scans, a study by researchers from Google and several medical centr(...)

‘We should be able to choose with whom our information is shared’. Photograph: iStock

Google’s search facility has transformed our lives. Whether it’s the times of shows at your local cinema or academic research via Google Scholar, inf(...)