Walking a mile a day can cut risk of dying from cancer by 40% – study

Exercise can reduce chance of dying from breast or prostate cancer and help with treatment side-effects, says Macmillan

Does a daily aspirin prevent cancer?

A study suggests that an aspirin a day can help prevent colon, oesophagus and stomach cancers. So should we all be self-medicating? Luisa Dillner investigates

Expanding waistlines will cause 3,500 more cancers each year, study finds

Scientists hope that linking 12,000 cancers each year to people being overweight will spark more action against obesity

The vasectomy-cancer link made me wince. But ignorance is the real danger

James Mackenzie: Vasectomies increase the risk of prostate cancer, a survey has found. But for men the taboo about discussing sexual health is perhaps a bigger threat

My cancer plan: poison in the fridge

Jo Beecham was diagnosed with advanced ovarian cancer in 2011. She keeps a stock of drugs ready so that she can choose when to die

Vasectomy raises risk of lethal prostate cancer, study shows

Danger seems to be highest among men who had a vasectomy before age 38, according to 24-year study of 50,000 men

The Shape We’re In review – sobering reflections on the obesity epidemic

Sarah Boseley's examination of the causes and consequences of obesity in the UK is salutary, but does not go far enough, writes Joanna Blythman

Experience: my dog found my cancer

Emilie Clark: 'None of the oncologists I met during my ordeal was sceptical about Mia's role in diagnosing my cancer – they have heard it before'

Does sunscreen prevent skin cancer?

Is a high-factor sunscreen enough protection against harmful rays, or should we cover up – or stay out of the sun altogether? Luisa Dillner reports

Patients can hurt doctors, too

Ranjana Srivastava: Doctors nearly always internalise insults that patients fling at them. This can have serious consequences to the quality of the healthcare they're able to provide