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Close-up picture of a Tibetan woman looking into the distance. She is carrying a baby in a shawl on her back. The background of the image is blurry.
Natural selection is unfolding right now in these remote villages in Nepal Physiological traits that help Tibetan women survive at high altitudes are being selected for within the population, meaning they may be becoming more common, new research hints.
A close-up of chickens in an industrial farm
Bird flu could become deadlier if it mixes with seasonal flu viruses, experts warn As of now, 17 states have reported H5N1 bird flu cases in humans, but there is still no evidence for transmission between people. Could that change?
photo of a woman's hands holding a large table-top alarm clock and adjusting the time
The case against daylight saving, from a neurologist and sleep expert While that "extra" hour of sunlight in the evenings can be exhilarating, it comes with significant health trade-offs.

Latest about Health

Oral-B Genius X Limited electric toothbrush product shot on Live Science Black Fridday overlay

It's simply the best electric toothbrush we've ever tested and it has an incredible 50% off for Black Friday

By Paul Brett published

Deals Save $100 on the Oral-B Genius X electric toothbrush with this Amazon Black Friday deal.

Deals
Image shows the Dyson TP4B blasting cool air.

This smart air purifier from Dyson has never been cheaper

By Mina Frost published

Deal Breathe easy with $150 off this top-of-the-line air purifier and fan from Dyson this Black Friday, making it the cheapest it's ever been.

Deal
Our reviewer wearing a Fitbit watch

Best Fitbit 2024: Track steps, stress, sleep and more

By Lloyd Coombes last updated

BUYING GUIDE The best Fitbit wearables available to buy: Tried and tested to provide you with options from simple fitness trackers to feature-packed smartwatches.

BUYING GUIDE
A woman checking one of the best fitness trackers during workout

Best fitness trackers 2024: Measure steps, sleep, calories and more

By Andrew Williams, Anna Gora last updated

Buying Guide These are the best fitness trackers you can buy in every category, from Apple Watch Series 8 and Garmin Fenix 7 to Amazfit Balance.

Buying Guide
Two women wearing some of the best budget fitness trackers doing a workout

Best budget fitness tracker 2024: Hit your fitness goals without breaking the bank

By Maddy Biddulph last updated

These are the best budget fitness trackers you can buy in every category, from Fitbit Inspire 3 and Garmin Vivosmart 5 to Amazfit Bip 3 Pro.

Exercise
A woman working inside a broiler chicken farm with numerous chicks on the ground, and automated waterers and feeders installed on the floor.

How to avoid bird flu

By Stephanie Pappas published

The vast majority of human cases of H5N1 bird flu in the U.S. have resulted from direct contact with animals, so a few simple precautions can keep most people's risk very low.

Flu
Close-up of a black woman rubbing a lotion onto her hand.

Your skin color may affect how well a medication works for you — but the research is way behind

By Emily Cooke published

As a new analysis highlights the impact of skin tone on drug safety and efficacy, experts outline what can be done to make medical research more inclusive.

Medicine & Drugs
A collage of a woman exercising in different poses

'Exercise juice' released by muscles helps nerves grow, study finds

By Clarissa Brincat published

A new study in mouse cells hints that substances released by muscles can help nearby nerves grow.

Exercise
An illustration of DNA breaking apart into tiny pieces

New CRISPR system pauses genes, rather than turning them off permanently

By Jennifer Zieba published

Researchers in Lithuania present the molecular structure of a new, more-versatile CRISPR system for gene editing.

Genetics
An electron microscope image of a flu virus

Bird flu strikes 1st child in the US — CDC says infection source unknown

By Pandora Dewan published

A child in California caught bird flu amid a recall of raw milk in the state, but investigations have found no evidence that the case was caused by raw milk.

Viruses, Infections & Disease
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