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New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Health

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.
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Health

A new mitochondrial theory of Alzheimer's deserves serious attention

A “grand unifying theory” of brain ageing suggests malfunctioning mitochondria might be to blame for Alzheimer’s and other brain conditions. And this new avenue of exploration already has some potential therapies at the ready

Leader

Health

Breastfed C-section babies get more of their microbiomes from milk

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TXBTRF 3d rendered medically accurate illustration of amyloid plaques on a alzheimer nerve cell

Health

Restoring the brain’s mitochondria could slow ageing and end dementia

Features

Sickle cell red blood cells

Health

Sickle cell disease is now curable, but the treatment is unaffordable

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LOS ANGELES, CA - NOVEMBER 03: Nicole Fahey, of Altadena, six months pregnant, receives a Pfizer vaccination booster shot from RN Veronique (cq) Vida (cq) at Eugene A. Obregon Park on Wednesday, Nov. 3, 2021 in Los Angeles, CA. The County of Los Angeles, including Supervisor Hilda L. Solis, Dr. Barbara Ferrer, Director of Public Health, and Norma Edith Garc?a-Gonz?lez, Director of Parks and Recreation, will host a media event kicking off COVID-19 vaccinations for children ages 5-11 in Los Angeles County. The COVID-19 vaccine manufactured by Pfizer and BioNTech is proposed to be given in two 10-microgram (mcg) doses administered 21 days apart. (Gary Coronado / Los Angeles Times via Getty Images)

Health

Covid-19 vaccines during pregnancy protect newborns from infection

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Health

Drunk mice sober up twice as fast when given hormone injection

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Big cats, such as lions and tigers, have tested positive for the coronavirus before, but this is the first known case of a lion probably transmitting the infection to zoo workers

Health

Lion infected with covid-19 probably passed it on to two zoo workers

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Naegleria fowleri amoeba

Health

Man in Florida killed by rare, brain-eating amoeba Naegleria fowleri

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Two elderly women walking across pedestrian are, back view

Health

Just 500 extra steps a day lowers heart disease risk for older adults

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Norovirus particles

Health

Norovirus outbreak: Why is the number of cases in England so high?

Cases of norovirus in England are at their highest level for more than 10 years and are still rising – here’s what could be behind it

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Health

Major drugmaker cuts insulin costs in the US by 70 per cent

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Health

Mediterranean diet may prevent cognitive issues for people with MS

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Health

Long-neglected chronic conditions finally come into the spotlight

Leader

Health

We’re starting to understand how viruses trigger chronic conditions

Insight

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