Sleeping less than five hours a night can raise depression risk, study suggests

Consistently short sleep duration more likely to precede symptoms than inverse, genetic data reveal

Should I worry about my clicking joints – and stop cracking my knuckles?

Our knees, shoulders, necks and hands make all sorts of pops and clicks. Sometimes we even encourage them. But is this the sound of damage being done?

Addiction to ultra-processed food affects 14% of adults globally, experts say

Report’s authors also estimate about 12% of children hooked and call for further research into problem

Ultra-processed food raises risk of heart attack and stroke, two studies show

Research presented to annual meeting of European Society of Cardiology prompts calls for action

Thursday briefing: What the UK’s first womb transplant means for the future of fertility

In today’s newsletter: does the UK’s first successful womb transplant mean that men could one day carry babies?

The isometric secret: 15 ways to get much fitter – without moving a muscle

What are the best exercises to reduce your blood pressure? The plank and the wall sit. Here is how to do them – and some other great poses – whatever your current fitness level