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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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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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We may now know how ketamine can treat depression for so long

Ketamine becomes trapped inside certain receptors in the brains of mice – and the longer it is trapped, the longer its antidepressant effects last

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Home stool test detects bowel cancer with over 90 per cent accuracy

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Our cells may boost their health by eating bacteria-killing viruses

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Migraines linked to rare genetic variants that could boost treatments

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ADHD could be spotted by a score showing if you're easily distracted

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A person who is blind can detect a bowl is in front of her while wearing a pair of smart glasses

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Smart glasses that play sounds help people who are blind find objects

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Marijuana as medicine: Everything you need to know

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Stunning image of how signals move through the heart wins photo prize

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How much does your immune system weigh? Now we have an answer

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Assortment of products with high sugar level like candies, gummy candies, soda, donuts, chocolate, lollipop, wafers and cupcakes on a table.

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Your ultimate guide to ultra-processed food – how bad is it really?

Highly processed foods, from pizza to bread, are said to be seriously bad for your health. Here is a digestible guide to what the evidence says, to help you make sense of the conflicting claims

Features

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Schools cut covid-19 sick days by 20 per cent using HEPA air filters

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How mental effort can build a cognitive reserve against brain ageing

Leader

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Is England doing enough to stop covid-19 spreading in hospitals?

Analysis

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Bird flu now sweeping the world evolved in Europe and Africa

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