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Discover the latest health news, scientific discoveries and big ideas about the human body and treating diseases, covid-19, diet, fitness, exercise, wellness and how to live a healthy life.

Scientist examining DNA results on a screen

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Rare mutation hints gene editing could prevent Alzheimer’s disease

Two people with a mutant version of a gene variant – APOE4 – linked to Alzheimer’s showed no signs of dementia, indicating that gene editing to mimic the effect may work against the condition

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We now know how many cells there are in the human body

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Kidneys for transplantation could come from babies who die at birth

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Spinal fluid test may enable earlier diagnosis of Parkinson’s disease

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What you need to know about the 2023 covid-19 boosters

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2R61H1F Dean Lloyd (left) uses a touch screen monitor to test his Argus II eye implant at UCSF Medical Center in San Francisco, Calif., on Friday, Feb. 27, 2009. Neuroscientist Matthew McMahon monitors Lloyd's progress. Lloyd, who has been completely blind for several years, can now see rough images of shapes and colors thanks to the experimental implant developed by Second Sight. (Paul Chinn/San Francisco Chronicle via AP)

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Doctors warn about the rise of people with obsolete medical implants

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Anti-ageing drugs could make more organs viable for transplants

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Key immune cells may help protect against inflammatory bowel disease

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A child with a sore knee

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Growing pains may indicate a greater risk of migraines later in life

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MDMA therapy for PTSD expected to get US approval after latest trial

US regulators could soon authorise MDMA-assisted psychotherapy for post-traumatic stress disorder after positive results in the largest clinical trial to date

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Huge rise in US overdose deaths from fentanyl mixed with stimulants

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Moderna’s improved mRNA covid-19 vaccine is effective at lower doses

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Cannabis for medical use is soaring but the research is lagging behind

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Is CBD a wonder drug or waste of money? Here’s what the evidence says

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