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In a trial, some participants were asked to reduce their calorie intake by 25 per cent every day. After two years, they showed signs of slowed biological ageing in one test, but not in others

Health

Does restricting calories slow down ageing? We simply don't know

A test based on blood biomarkers suggests that calorie restriction slightly slows ageing, but the jury is out on whether the dieting strategy really works

Analysis

Puppy eating from a bowl

Life

Dogs that eat raw food rather than kibble have better gut health

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fresh artichokes at farmers market ; Shutterstock ID 1472137547; purchase_order: -; job: -; client: -; other: -

Health

The food and drink that really can boost your immune system

Features

Countries such as the UK, Mexico and South Africa have a tax on sugary drinks

Health

Taxing sugary drinks may not cut obesity as much as headlines claim

Analysis

Person milking a cow

Humans

Milk may have fuelled a growth spurt in ancient Europeans

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Rheumatoid arthritis of the hands. Coloured bilateral X-ray of the hands and wrists of a patient with rheumatoid arthritis. The arthritis is particularly severe in the hand at right, with several joint deformities. Rheumatoid arthritis is a degenerative autoimmune disease that mainly affects the capsule (synovium) around the synovial (flexible) joints, causing chronic inflammation. It can be a debilitating and painful condition and can lead to deformities and loss of functioning and mobility.

Health

A Silent Fire review: What you need to know about inflammation

Culture

Girl eating chocolate

Chemistry

Chocolate with a low-fat centre could still feel luxurious to eat

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Low-carb diet reduces seizures for people with drug-resistant epilepsy

Health

Low-carb diet reduces seizures for people with drug-resistant epilepsy

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New Scientist 5 best long reads 2022

Health

Read 51��’s 5 best long reads of 2022 for free

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Bee on a rape flower

Health

Shortage of pollinators could be killing 427,000 people a year

Inadequate numbers of bees and other pollinators have a huge impact on human health due to lower production of fruit and vegetables, according to a modelling study

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Health

How postbiotics could boost your health and even help reverse ageing

Features

Health

The truth about the foods said to boost your immune system

Features

Health

Appetite-suppressing probiotic helps overweight people lose weight

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Health

Why we urgently need answers about artificial sweeteners and health

Features