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a close-up of someone passing a diabetes monitor to another person
What is type 5 diabetes? Newly recognized form of the disease gets name First spotted decades ago but largely forgotten, a newly named form of diabetes stems from undernutrition and is thought to affect millions.
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a close-up of a smiling man's mouth
Mysterious chunks of DNA called 'inocles' could be hiding in your mouth Researchers have discovered giant DNA structures in oral bacteria, and data hint they could influence the function of your immune system.
Health workers unload a patient from an ambulance outside a hospital
'The Big One' could be even worse than COVID-19. Here's what epidemiologist Michael Osterholm says we can learn from past pandemics. The new book "The Big One" describes lessons learned from past pandemics and how they might be applied to mitigate the dangers of future outbreaks.

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The evolution of life on Earth 'almost predictably' led to human intelligence, neuroscientist says

By Nicoletta Lanese published

Interview Neuroscientist Nikolay Kukushkin spoke to Live Science about how human consciousness evolved.

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Interview

We may finally understand stress-induced hair loss

By RJ Mackenzie published

Alopecia areata, which causes patchy hair loss, is often preceded by stress. Scientists are starting to figure out why through animal studies.

Health
A Live Science Black Friday logo and a picture of the Levoit Core 600S-P, taken by our reviewer

The best air purifier we have ever tested hits its lowest-ever price ahead of Black Friday

By Anna Gora published

Deals Save a huge 31% on the Levoit Core 600S-P — a powerful, allergy-friendly model that takes the top spot in our guide to the best air purifiers.

Deals
A Live Science Black Friday Deals logo and a picture of a woman exercising in the park, looking at her smartwatch

Top 16 Black Friday smartwatch deals: From budget fitness trackers to premium Garmin watches

By Anna Gora last updated

Deals Snap up a top-rated smartwatch without breaking the bank.

Deals
CT scan of a man's chest.

A man's muscles looked strangely deformed. Doctors found they were leaking calcium into his blood.

By Anirban Mukhopadhyay published

A man showed up to the hospital with vomiting, weakness, failing kidneys and sky-high calcium. The culprit was a muscle-enhancing oil he injected into his chest and arms years ago.

5 Comments
Health

Study links GLP-1 use to some pregnancy risks — but the research has key caveats

By Nicoletta Lanese published

A new study hints that pregnant people who have previously taken drugs like Ozempic may face a higher risk of certain poor pregnancy outcomes. But more studies are needed to understand the finding.

Fertility, Pregnancy & Birth

Has America's obesity rate plateaued?

By Stephanie Pappas published

Some recent national numbers suggest the obesity rate has plateaued or even declined. Experts are skeptical.

Health
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
RFK and a mound of ants

Turmoil at the CDC, NASA's comet 3I/ATLAS image release, and the insect apocalypse.

By Ben Turner published

Science news this week Nov. 22, 2025: Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the weekend.

Science news this week

Are free radicals really that bad for you?

By Victoria Atkinson published

Free radicals are highly reactive molecules that are missing an electron. They get a bad rap, but could they actually have any benefits?

Health
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