Spiral scratches on contact lenses can turn them into multifocals
Inscribing a spiral in the centre of a contact lens seems to create optical vortices that interact so that the…
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Niacin supplements linked to greater risk of heart attacks and strokes
People with higher levels of niacin in their blood may be more at risk of a heart attack or stroke,…
Surgeons perform the second ever pig-to-human heart transplant
The heart of a genetically modified pig has been transplanted into a man with heart disease, the second such surgery…
Honey made by ants could treat some bacterial and fungal infections
An ant species in Australia makes honey that killed some bacterial and fungal infections in the lab, raising hopes that…
Taurine supplements extend lifespan and health in old age in mammals
Mice had longer lives and monkeys stayed healthier as they aged when given taurine supplements
What is going on with Twitter and should I move to Bluesky instead?
As the Elon Musk era of Twitter continues to throw up bugs and controversies, some people are looking at alternatives.…
Women’s small intestines are 30 centimetres longer than men’s
A longer small intestine may improve the absorption of nutrients from our food, which may be required more during pregnancy…
Go-to migraine drug actually does nothing to relieve vertigo symptoms
The drug rizatriptan is often recommended for vestibular migraines, which cause vertigo as well as headache, but doesn't actually seem…
Migraine drug that treats headache also eases symptoms like dizziness
The drug ubrogepant doesn't just ease the headache of a migraine, but also relieves symptoms like neck stiffness and fatigue…
Reducing high blood pressure can cut risk of dementia
Common medications for keeping blood pressure down, including ACE inhibitors, diuretics and calcium channel blockers, also lower the risk of…