UK poll highlights fears about access to emergency contraception

Doctors say survey shows need for morning-after pill to be available at corner shops, petrol stations and supermarkets

Cold feet: could putting your socks in the fridge help you through the heatwave?

It’s worth a try, according to the Red Cross – seriously

NHS staff battling wave of food supplement disinformation

Exclusive: Cancer charity says dispelling falsehoods gleaned from social media is now routine task for clinicians

Poor sleep linked to rising cancer risk in under-50s

Findings add to growing efforts to explain why cancer rates are increasing among younger adults worldwide

The curse of burnout Britain affects politicians as much as everyone else: give Carla Denyer a break

The Green MP’s decision to take time out has angered some – but many more will see endemic stress as a blight we must address, says Guardian columnist Gaby Hinsliff

A third of Britons believe they have changed social class, survey finds

‘Polyclass’ of 6 million people consider themselves to belong to more than one social category, researchers say

I made my husband ill with a few words – nobody is immune to the power of the nocebo effect

My prank demonstrated how our minds can adversely affect our health, and scientists are increasingly showing that negative thoughts can produce very real symptoms, says science writer Helen Pilcher

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