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image of three human egg cells inside ovarian follicles
Could aging eggs be 'rejuvenated'? New tool may help pave the way to fertility-extending treatments Scientists invented a new experimental system to study how age-related changes in egg cells make them more prone to chromosomal errors.
Asian woman with white skin, gray hair, sitting with her back, Photo of the back.
Gray hair may have evolved as a protection against cancer, study hints Aging comes with graying hair, which may be a sign of the body lowering its risk of cancer, a study suggests.
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Woman with Insomnia. Young woman lying on bed with hand on forehead.
Insomnia and anxiety come with a weaker immune system — a new study starts to unravel why People with anxiety or insomnia tend to have weaker immunity. The decline of a key immune cell may be a culprit.

Latest about Health

Female doctor collecting patient's blood sample for test or donation in medical clinic.

New tests could nearly halve the rate of late-stage cancers, some scientists say — is that true?

By RJ Mackenzie published

Blood tests that look for over a dozen cancers are being developed. But how soon will they help patients?

Cancer

A man's bladder looked like a Christmas tree

By Kamal Nahas published

In an unusual case, a man's bladder swelled dramatically at its base, taking the shape of a Christmas tree.

Health

Tiny implant 'speaks' to the brain with LED light

By Payal Dhar published

By directly communicating with the brain, a new wireless device could someday help restore lost senses or manage pain without medications, its developers say.

2 Comments
Neuroscience
a camera, telescope and binoculars on a red background

The self-gifter's Christmas: Treat yourself to gear you'll actually want this Christmas

By Tantse Walter published

Buying guides Don't let anyone else choose your next telescope, camera or binoculars — these are important pieces of equipment that you should buy for yourself

Buying guides
Young girl checking her height on the wall

What's the fastest a human can grow?

By Ashley Hamer published

Humans grow tall in spurts, but what's our fastest period of growth?

Health
A woman holding a water flosser

Best water flossers 2025: Top 6 oral irrigators from Waterpik, Bitvae and more

By Joanne Lewsley last updated

BUYING GUIDE These are the best water flossers you can buy in every category, from Waterpik Ultra to Oclean W10 and Spotlight Oral Care.

BUYING GUIDE

It matters what time of day you get cancer treatment, study suggests

By Clarissa Brincat published

Giving immunotherapy earlier in the day can significantly extend patients' survival, compared to giving treatment later in the day, a new study of lung cancer shows.

Cancer
Two women are resting between exercises while sitting on a park bench outside and looking at their fitness trackers

Best fitness trackers for beginners 2025: From Apple Watch to Garmin Forerunner 165

By Lloyd Coombes last updated

Buying guides These are the best beginner-friendly fitness trackers you can buy in every category, from Apple Watch and Garmin Forerunner 165 to Amazfit Active

Buying guides
FORM Smart Swim 2 swimming goggles being worn by our reviewer

Best fitness trackers for swimming 2025: Smart goggles, screenless bands and more

By Kat Bayly last updated

Buying guides These are the best fitness trackers for swimming you can buy in every category, from best overall to best for customization.

Buying guides

An otherwise 'fit' man had a stroke after drinking 8 'high-potency' energy drinks a day

By Nicoletta Lanese published

A man with few risk factors unexpectedly experienced a stroke, and his daily energy drink habit may have been to blame.

5 Comments
Food & Diet
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