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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.

Avoiding liquids before surgery may be an unnecessary precaution

Health

Avoiding liquids before surgery may be an unnecessary precaution

Most hospitals ban all drinks for two hours before surgery, but there is growing evidence that these guidelines are out of date, says Clare Wilson

Comment

People who live together may eat similar food, which could contribute to a similar environment in the mouth that encourages the same bacterial strains

Health

You share a third of your oral bacteria with other people in your home

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Cropped shot of an unrecognisable man sitting alone at home and suffering from arthritis in his hands - stock photo

Health

Vagus nerve receptors may be key to controlling inflammation

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Observational studies suggest that puzzles may ward off dementia, but this has not been proven

Health

Lifestyle may affect your dementia risk but the extent is exaggerated

Analysis

A nasal drops bottle.

Health

Spraying drugs up the nose may help heal the brain after a stroke

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A human cell (centre) during mitosis

Health

A blast of ultrasound waves could rejuvenate ageing cells

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One brain network may be involved in six mental health conditions

Health

One brain network may be involved in six mental health conditions

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An unrecognisable mature pregnant woman lies on a hospital delivery bed as she has fetal monitoring. Cardiotocography is usually called a 'CTG' by medical staff. It can be used to monitor a baby's heart rate and a mother's contractions during pregnancy

Health

Vaginal swabs could be used to predict likelihood of preterm births

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Closeup dark spots melasma pigmentation skin on face asian woman. Problem skincare and health concept.

Health

Anti-wrinkle patch uses microneedle injections to restore skin

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Close up of Burning gas cooker

Health

Gas stoves harm our health and the climate - should they be banned?

US authorities are reportedly considering a ban on new gas stoves in light of research claiming they are linked to one in eight cases of childhood asthma

Analysis

Health

Pancreatic cancer linked to disrupted circadian clocks in cells

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Health

Short breathing exercise lifts mood more than mindfulness meditation

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Health

Genetic tracking scheme for viruses could warn of dangerous outbreaks

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Health

Children living near airport found to have raised lead levels in blood

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