My teenage daughter’s OCD keeps getting worse. What can I do?

Cognitive behavioural therapy may help her to cope with her anxiety and learn that she doesn’t need to respond to intrusive thoughts

What are peptides, are they safe and is there evidence to back up the hype?

Influencers and athletes are among those claiming substances can help with injury repair, weight loss and angi-ageing

Medicines watchdog to investigate UK peptide clinics over health claims

Exclusive: Guardian investigation finds several clinics making potentially unlawful claims about benefits of unregulated therapies

‘Wild west’ reformer pilates boom is causing rise in injuries, experts warn

Lack of regulation for specialist classes leaves UK fitness enthusiasts at risk, say professional bodies

Yes, allergy season has already started. Here’s how to manage symptoms

Pollen seasons are now ‘longer and more intense’, say experts. Here is what to know about allergy treatments and when to seek medical help

Stop the brain rot! 12 ways to stay sharp in a mind-frazzling world

Feel like too much low-quality screen time is making you … dumber? From focusing on your environment to ‘washing’ your brain, experts share tips on how to sharpen up and keep your mind fighting fit

How rotten is your brain?

Take our quiz to find out how bad your brain rot is

Protein chips, sex chocolate: what are ‘functional foods’, and do they actually boost health?

If a food is labeled ‘functional’, what does that mean? Not much, experts say

‘As soon as I left the first session I felt taller’: is reformer pilates as amazing – or awful – as they say?

One of the fastest-growing fitness trends is also one of the most divisive. To its fans, it promises a stronger, healthier body; to its critics, it’s another way to make women feel insecure. Time to sort fact from fiction

A moment that changed me: for the first time in my life, a stranger pronounced my name correctly

I had grown up dreading introductions, with the inevitable mangling of my name. Suddenly, in India, we were both getting the respect we deserved