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two nurses wearing protective equipment work in the ICU
'We have basically destroyed what capacity we had to respond to a pandemic,' says leading epidemiologist Michael Osterholm Live Science spoke with leading epidemiologist Michael Osterholm about his new book, "The Big One," which discusses the next pandemic and how to mitigate its harm.
A colored diagram of different neurons in the mouse brain
Map of 600,000 brain cells rewrites the textbook on how the brain makes decisions A new study shows that the brain activity behind decision-making is far more widespread across the organ than first thought.
Background image shows sperm swimming. Image in top right corner is of the acne drug, accutane in a box.
Acne drug Accutane may restore sperm production in infertile men, early study hints Accutane, a decades-old acne treatment, could help men with infertility produce motile sperm and avoid invasive sperm retrieval surgery, a study finds.

Latest about Health

'I would never let a robot incubate my child': Poll on 'pregnancy robots' divides Live Science readers

By Elise Poore published

Live Science readers reveal whether they would use a hypothetical "pregnancy robot" — a humanoid machine fitted with an artificial womb to sustain a human pregnancy from conception until birth.

Fertility, Pregnancy & Birth
A Live Science deals logo and a close-up picture of a man checking his fitness tracker during a workout

The 3 best fitness tracker deals we have spotted in the Labor Day sale

By Anna Gora published

Deals Save up to 35% on our favorite smartwatches from Garmin, Withings and Samsung — but hurry, these discounts will not last long.

Deals
Levoit Sprout air purifier sat next to two plushie toys and a houseplant

Levoit Sprout air purifier review — Baby-friendly solution to airborne pollutants

By Anna Gora published

Reviews Efficient, smart-enabled, and thoughtfully designed, the Levoit Sprout air purifier is a great choice for small nurseries and toddler rooms.

Reviews

'Aging clocks' can predict your risk of disease and early death. Here's what to know.

By Patrick Sullivan published

"Biological aging tests," also called aging clocks, can predict your risk of age-related disease, disability, early mortality and more — but are they ready for prime time?

Ageing

Formaldehyde-free hair-straightening products may still threaten health, concerning study finds

By Nicoletta Lanese published

Formaldehyde-free hair-straightening products have been marketed as a safer option, but they may pose a risk to kidney health, a case series suggests.

Health
A close-up picture of our reviewer testing the Garmin Forerunner 970

Garmin Forerunner 970 review — A serious smartwatch for running pros

By Andrew Williams published

Reviews More affordable than a Fenix 8 and brighter too: What’s not to like? This is a top running and triathlon watch.

Reviews
Our expert reviewer testing the workout features on the Garmin Fenix 8 smartwatch

Best fitness trackers 2025: From smart rings to multisport GPS watches

By Andrew Williams, Anna Gora last updated

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

Buying Guide

Gum disease treatment slows the thickening of arteries, clinical trial shows

By Sophie Berdugo published

New trial results show that intense gum disease treatment reduces how much the carotid artery narrows in otherwise healthy individuals. This suggests oral health should be taken seriously as a contributing factor in cardiovascular disease.

Heart & Circulation

Early test of new laser-free eye treatment shows promise

By Olivia Ferrari published

In lab experiments, scientists are testing a new way to reshape the cornea and correct impaired vision, but the research faces many hurdles before it could be approved for use in humans.

Surgery

Rare condition made a woman see people as dragons

By Mindy Weisberger published

A woman sought treatment for hallucinations she'd been experiencing since childhood, in which people's faces would morph into having dragon-like features.

Health
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