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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.
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.

Latest about Health

The Triborough Bridge along the East River in New York City with massive air pollution in the sky from wildfires.

Wildfire-smoke-related deaths in the US could climb to 70,000 per year by 2050 due to climate change, study finds

By Sascha Pare published

The number of deaths from exposure to wildfire smoke in the U.S. could rise by more than 70% in the next 25 years. The human and economic costs involved would be astronomical, researchers say.

Viruses, Infections & Disease
Our reviewer testing the Bluefin Fitness Task 2.0 treadmill

Best walking treadmills 2025: An easy way to hit your step goal

By Sam Hopes last updated

Buying Guide These are the best walking treadmills you can buy in every category, from Mobvoi Home Treadmill to Bluefin Fitness Task 2.0 Treadmill.

Buying Guide
Dreo 713S Smart Humidifier being tested by our reviewer

Best humidifiers 2025: Banish dry air from your home

By Sarah Finley last updated

Buying Guide These are the best humidifiers you can buy in every category, from Dyson AM10 and Levoit LV600HH to HoMedics TotalComfort Deluxe.

Buying Guide
A close-up picture of a woman checking her fitness watch while exercising outdoors

4 reasons why you keep abandoning your fitness trackers (and how to stop them from happening again)

By Anna Gora published

References Why do so many of our smartwatches and smart rings end up collecting dust? Here's what science says about long-term fitness tracking.

References
An orange cat standing on top of an air purifier

Best air purifiers for pet owners 2025: Remove pet dander, hair and odors

By Tantse Walter last updated

Buying guides These are the best air purifiers for pets, from Levoit Vital 200S and AirDoctor AD3500 to SwitchBot Table Air Purifier.

Buying guides
An orange cat sitting on a sofa next to an air purifier

Best air purifiers for allergies 2025: Breathe easy this winter

By Molly Cleary, Anna Gora last updated

BUYING GUIDE These are the best air purifiers for allergies you can buy in every category, from Levoit Core 600S and Molekule Air Pro to RabbitAir A3.

BUYING GUIDE

Scientists created human egg cells from skin cells — then used them to make embryos

By Nicoletta Lanese published

In a proof-of-concept experiment, scientists demonstrated that you can create and fertilize human eggs in the lab using sperm, genes from skin cells, and the "shells" of existing egg cells.

Fertility, Pregnancy & Birth

Heart quiz: What do you know about the body's hardest-working muscle?

By Marilyn Perkins published

Get pumped up — it's time to show off your knowledge about the heart.

Heart & Circulation
Two soccer players battling to head the ball

Years of repeated head impacts raise CTE risk — even if they're not concussions

By Clarissa Brincat published

Years of hits in sports like football and soccer, even without concussions, can trigger neuron loss and inflammation in the brain, a study finds.

Health
Alen BreatheSmart 35i air purifier in a living room, a view from above

Alen BreatheSmart 35i air purifier review — A real treat for gadget enthusiasts

By Anna Gora published

Reviews The Alen BreatheSmart 35i easily lives up to its name, offering superb air-cleaning performance and some of the best smart features on the market.

Reviews
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