Testosterone linked to higher risk of heart disease, research finds
Study that analysed data from UK found men were more likely to develop heart conditions
Celebrities help the £500 vitamin jab go mainstream
Intravenous therapy has taken off via social media after star names led the way. But its effects are unknown, doctors warn
Abuse prevention: how to turn off the gaslighters
It’s a coercive and insidious form of psychological torture, but gaslighting can be recognised and stopped
Weekend lie-ins not enough to recover from sleep loss, study finds
Research suggests link between disrupted sleep cycles and unbalanced metabolism
The calming effects of sewing can help people express and heal themselves
How absorbing your concentration in needlework relieves inner turmoil. By Clare Hunter
Bedtime social media use may be harming UK teenagers, study says
Exclusive: a fifth of 13- to 15-year-olds ‘spend five hours or more a day on social media’
Burned out and overwhelmed: should you embrace the joy of no?
Once we were pressured to acquire things and do more with our lives. Now, we’re being told to declutter our homes and diaries. What happened to just being ourselves?
The Guardian view on the science of hangovers: no more research needed
Editorial: Raise a glass, though only one, to the selfless German students and Swedish sailors who have offered up their livers to science
A lifetime of sleep, from birth to menopause and beyond
Babies wake at any hour, teenagers refuse to get out of bed, older adults find a good night’s rest harder to achieve. Why do our sleep patterns shift with age?
Is kombucha good for you?
Consumption of fermented food and drink has soared recently, but are probiotic products really that beneficial?