‘It’s not ethical and it’s not medical’: how UK rehab clinics are cashing in on NAD+

They are beloved by A-listers and surging in popularity. But claims that NAD+ infusions are a fix for addiction are unproven, risky – and possibly illegal, an Observer investigation reveals

The pill hasn’t been improved in years. No wonder women are giving up on it

When contraception has stagnated for decades, it is hardly surprising it’s fallen victim to culture wars and a wellness cult

‘The bot asked me four times a day how I was feeling’: is tracking everything actually good for us?

Gathering data used to be a fringe pursuit of Silicon Valley nerds. Now we’re all at it, recording everything from menstrual cycles and mobility to toothbrushing and time spent in daylight. Is this just narcissism redesigned for the big tech age?

The best anti-allergy and hypoallergenic pillows, tried and tested for every type of sleeper

From feather-free to vegan down, we tested (and tussled with) 17 pillows to reveal the best

‘Betrayed by the system’: Chappell Roan sparks debate over pay and healthcare in pop

The singer castigated record labels in her Grammys speech – but, as music industry insiders explain, issues around artist health and support run even deeper

What is nerve flossing and does it help with nerve pain?

It can help relieve pain and tension, especially for patients recovering from injury or nerve compression conditions

‘Gaba is the off switch of the brain’: Is it also the answer to better sleep, sobriety and less anxiety?

Products that enhance the uptake of this neurotransmitter are burgeoning - including drinks that mimic the effects of alcohol, without the hangover. Here’s what happened when I tried them

‘Grounding’ proponents say it helps us realign with the Earth’s electric charge – but the claims don’t land

Experts say the few scientific papers published about grounding – which can include walking barefoot outdoors or lying on the ground – lack scientific rigour

What I learned from a lovely woman on a packed ward in hospital

Healthy people are being forced to stay in hospital because of a lack of social care – and it’s an indictment of our current system, writes Zoe Williams

OurChemist

Our Chemist – Health