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Nerve demyelination. Coloured transmission electron micrograph (TEM) of a section through a Schwann cell and a nerve fibre, showing the early collapse of its myelin sheath. Myelin (red) is an insulating fatty layer that surrounds the nerve fibre (axon, orange), increasing the speed at which nerve impulses travel. It is formed when a Schwann cell (green) wraps around the fibre, depositing layers of myelin between each coil. Demyelination occurs in nerve disorders such as multiple sclerosis (MS). Patches (lesions) of myelin sheath are destroyed and nerve function is impaired. Magnification: x3800 when printed 10 centimetres wide.

Health

MS reversed by transplanted immune cells that fight Epstein-Barr virus

In a small trial, immune cells that fight the Epstein-Barr virus have stopped the progression of multiple sclerosis, an autoimmune condition that can lead to symptoms, such as difficulty walking, that worsen over time

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Can a phone app really be your therapist?

Technology

Can a phone app really be your therapist?

Comment

How do we decide what counts as trauma – and have we got it all wrong?

Health

How do we decide what counts as trauma – and have we got it all wrong?

Features

Diseased lung scan

Health

Drugs seem to help regenerate mouse lungs damaged by cigarette smoke

News

The prototype pillow expands and deflates like human lungs

Health

Hugging a pillow that mimics breathing could reduce anxiety

News

Middle-age spread isn't down to metabolism, but we know how to beat it

Health

Middle-age spread isn't down to metabolism, but we know how to beat it

Features

Vida Glow image

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The hidden cause of premature ageing: Advanced Glycation End products

no-section

Health Check newsletter: A U-turn in Caesarean policy

Health

Health Check newsletter: A U-turn in Caesarean policy

News

Lose yourself: How transcendent experiences can boost your well-being

Health

Lose yourself: How transcendent experiences can boost your well-being

Features

Pedestrians

Health

Pedestrian-friendly cities have lower rates of diabetes and obesity

A review of 170 studies finds consistent evidence that people are less likely to be obese or have diabetes if they live in cities where walking and cycling is safe and convenient

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Health

Why everything you thought you knew about posture is wrong

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Love drugs are coming and they bring big ethical problems with them

Comment

Health

Cheap blood test detects lung cancer at an early and treatable stage

News