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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.

Someone having their blood tested for HIV in Kampala, Uganda, in December 2022

Health

Gene variant that seems to protect against HIV may lead to new drugs

A different form of a gene called CHD1L found in people with African ancestry has been linked to lower HIV levels in people infected with the virus, and the discovery could open the door to improved treatments

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Health

Your gut microbiome is linked to your fitness and biological age

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Blood sample being taken to text for lead exposure

Health

Lead exposure linked to higher risk of engaging in criminal behaviour

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Which dietary supplements actually work and which should you take

Health

Which dietary supplements actually work and which should you take

Features

Women may age fastest during their 30s and 50s

Health

Women may age fastest during their 30s and 50s

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Intermittent fasting could make immune cells more effective in fighting pathogens and cancers

Health

Intermittent fasting could boost immunity in addition to weight loss

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Loss of smell may be an early sign of Alzheimer's in at-risk people

Health

Loss of smell may be an early sign of Alzheimer's in at-risk people

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A pig having its snout swabbed to test for viruses

Health

People in the US passed swine flu to pigs nearly 400 times in 12 years

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Targeted mRNA delivery will lead to cheaper cures for many diseases

Health

Targeted mRNA delivery will lead to cheaper cures for many diseases

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Young mouse blood extends lives of older ones while rejuvenating them

Health

Young mouse blood extends lives of older ones while rejuvenating them

Surgically attaching old mice to young mice to exchange their blood has previously been shown to rejuvenate the older individuals' brains, livers and muscles. Now, it has been shown to also extend their lifespan, even after the animals have been detached

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Health

How cancer-fighting immune cells could be made safer and more powerful

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Health

Cannabis poisoning cases quadruple in children after legalisation

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Health

Aspirin raises the risk of brain bleeds and may not prevent strokes

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Health

Honey made by ants could treat some bacterial and fungal infections

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