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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.

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How worried should you be about your BMI?

Body mass index (BMI) is used as a global standard for measuring health, but does it actually tell you anything about how healthy you are on an individual level? Carissa Wong explains the problems with this flawed tool

Analysis

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Why drug overdose deaths have suddenly plummeted in the US

News

Foods rich in protein.

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Why are we so obsessed with protein? A new book looks for answers

Culture

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Parkinson's disease may reduce enjoyment of pleasant smells

News

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How a midlife tune-up could help prepare you for a healthy old age

Leader

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Sharing genetic risk scores can unwittingly reveal secrets

News

Frailty sets in far earlier than you’d expect, but you can reverse it

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Frailty sets in far earlier than you’d expect, but you can reverse it

Features

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A daily multivitamin may slightly slow rates of ageing

News

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Inflammation might cause Alzheimer's – here's how to reduce it

News

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Alzheimer’s may start with inflammation in the skin, lungs or gut

The Alzheimer’s field is being turned on its head as mounting evidence points to the disease beginning outside the brain many years before symptoms start. This may mean we have to totally rethink how we approach preventing and treating the condition

News

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We must close the 'shocking' knowledge gap in women's health

News

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How worried should you be about microplastics?

Analysis

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Rare family has had many more sons than daughters for generations

News

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Your microbiome may determine your risk of a severe allergic reaction

News