Seven ways IVF changed the world – from Louise Brown to stem-cell research

The first ‘test-tube’ baby turns 40 this month, but the impact of in vitro fertilisation extends far beyond solutions to fertility problems

Britain needs to get fit. But warnings and advice alone aren’t enough

It’s taken an integrated strategy to reduce smoking. We need a similar policy to change the way we look at fitness, says public health academic Mike Kelly

Elvis Costello reveals cancer diagnosis as he cancels tour dates

‘Small but very aggressive’ cancer has been operated on, but recovery forces songwriter to pull out of tour

Enough of the knob gags: penis size is a mental health issue

An academic researching penis size and self-esteem was bombarded with puerile messages. But for many men, it’s no joke, writes Rhiannon Lucy Cosslett

From apps to artificial wombs: the smart tech transforming NHS care

Smart pills can keep track of a patient’s correct dose – and could even monitor vital signs

Notes on a Nervous Planet by Matt Haig – how to survive the 21st century

This follow-up to Reasons to Stay Alive is not a smug self-help book, but an honest and human guide to coping with the modern worldo

How do I get a six-pack? You asked Google – here’s the answer

Every day millions of people ask Google life’s most difficult questions. Personal trainer Emma Oko answers this one

Sajid Javid looks into easing rules on medical cannabis prescription

Advisory Council on the Misuse of Drugs to carry out study for home secretary

Sonic doom: how noise pollution kills thousands each year

From heart disease to type 2 diabetes, noise is having dire effects on people’s health. So who is most at risk, what can be done about it – and can you protect yourself?

Scottish government plans restrictions on sugary and fatty foods

Ministers’ plans to tackle obesity in some cases go further than health ministers in England