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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.

White opioid pills

Health

Newly found brain pathway could be key to reducing opioid addiction

Researchers have identified a brain pathway in mice that governs the development of opioid tolerance. If the same exists in humans, treatments that inhibit it could prevent opioid addiction

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How understanding a form of broken heart syndrome could save lives

Health

How understanding a form of broken heart syndrome could save lives

Comment

Stop drinking, keep reading, look after your hearing: a neurologist?s tips for fighting memory loss and Alzheimer?s. Dr Richard Restak at his home in Washington, D.C. on August 3, 2022. ? Greg Kahn / Guardian / eyevine Contact eyevine for more information about using this image: T: +44 (0) 20 8709 8709 E: info@eyevine.com http://www.eyevine.com

Health

The Complete Guide to Memory review: How we remember and how we forget

Culture

Faecalibacterium prausnitzii bacteria, illustration - Image ID: W0YJBD (RF)

Health

Chronic fatigue syndrome linked to lower levels of some gut bacteria

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The coronavirus is continuing to mutate as it spreads

Health

Millions of coronavirus mutations offer a new insight into evolution

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Vitamin D may help to lower blood sugar levels but high doses have been linked with kidney stones and other health problems

Health

High-dose vitamin D may prevent pre-diabetes becoming type 2 diabetes

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Light micrograph of a section through the spleen of a patient with Gaucher's disease. Small lymphocytes and large macrophage cells (Gaucher?s cells, pink, a type of white blood cell) are present. Gaucher's disease is an inherited metabolic disorder in which a fatty substance called glucocerebroside accumulates in the spleen (in macrophages), lungs, liver and bone marrow, and sometimes the brain. This is due to an absence of the enzyme glucocerebrosidase (GC). The disease appears in childhood, and some forms are fatal in the first few years. Other forms cause enlargement of the affected organs, weak and painful bones and anaemia. Some forms also cause severe nervous system damage. There is no cure, but enzyme replacement therapy using GC can relieve the symptoms. Haematoxylin-eosin saffron (HES) stain. Magnification: x400 at 24x36 mm size.

Health

Genes for Gaucher disease may have protected Jewish people against TB

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Human sperm

Health

Sperm-sorting device aims to find healthy samples to boost IVF success

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A rat brain (red) with a grafted human brain organoid (green)

Health

Human neurons implanted into a rat's brain respond to flashing lights

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A woman seeking treatment for chronic back pain

Health

Antidepressants mostly can't treat chronic pain, despite wide use

Ongoing pain, such as chronic back or neck pain, is difficult to treat, so some doctors prescribe antidepressants. Now, a review of evidence says these drugs mostly don't work as a treatment

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Health

We must not lose the interest in immune health that covid-19 spurred

Leader

Health

Hearing noise and moving our body helps us gauge the passing of time

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Health

How the immune system changes with age and why

Features

Health

How to tell if your immune system is weak or strong

Features