Wild swimming: health miracle or a high-risk pastime?

More people than ever are taking to rivers and lakes, but experts are increasingly advising caution before an outdoor dip

‘We are expected to be OK with not having children’: how gay parenthood through surrogacy became a battleground

In New York, a gay couple fighting to make their insurers pay for fertility treatment have found themselves in the middle of a culture war. What happens when the right to parenthood involves someone else’s body?

My partner snores and won’t do anything about it. Help!

It will be hard to change his behaviour alone, writes advice columnist Eleanor Gordon-Smith. But stand your ground – even if sleep-deprived

I’ve tried everything and finally found the perfect cure for insomnia

I was wide awake again at 4am unsure what to do – then I had a brainwave

Why has Britain fallen in love with Botox? There is only one way to find out …

Increasing numbers of people are using the cosmetic treatment and they are happy to admit it. But what does it feel like to freeze your forehead, does anyone notice – and can it change how you feel about yourself?

400 people in UK diagnosed with preventable cancer every day, data shows

Experts say healthy lifestyle changes such as quitting smoking and eating more vegetables can lower risk

Readers reply: are there any foods that have not at some time been considered harmful in a study?

The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts

Want to get a good night’s sleep? First of all, stop trying

Seven expert and unexpected tips for people who have already tried everything. By Camilla Stoddart

Rage rooms and primal screams: how stressed-out workers are letting off steam

London’s ‘Screamatorium’ is one way to self-soothe as office tension (and therapy costs) mount

The Fitbit dictates your outfit. If you can’t do 10,000 steps in it, does it really work?

Our new love of walking has subverted our fashion choices – flat shoes are de rigueur and the pencil skirt virtually extinct