Latest about Health
Best Fitbit watches 2025: Tried and tested
BUYING GUIDE The best Fitbit wearables, from simple fitness trackers to feature-packed smartwatches.
AI analysis of 100 hours of real conversations — and the brain activity underpinning them — reveals how humans understand language
An AI model trained on dozens of hours of real-world conversation accurately predicts human brain activity and shows that features of language structure emerge without being coded in.
Do sperm really race to the egg?
It's commonly thought that sperm "race" to the egg, with the winner fertilizing it. But is this really the case?
How do fitness trackers measure your heart rate?
Everything you need to know about photoplethysmography (PPG), the technology behind heart rate measurements in fitness watches and smart rings.
'It is a dangerous strategy, and one for which we all may pay dearly': Dismantling USAID leaves the US more exposed to pandemics than ever
Opinion The foreign aid program has been one of the country's best defenses against emerging infectious diseases. Without it, we are more vulnerable to a pandemic than ever.
How does rowing affect your heart, and is it different to running?
References Rowing machines and treadmills do not challenge your cardiovascular system in the same way, so what is the science behind it?
Epigenetic 'scars' on the genome can be passed down by grandmothers, study finds
In a story of collaboration and community, researchers identified intergenerational epigenetic changes caused by war and trauma in Syrian refugees.
POLG diseases: Rare genetic conditions that starve cells of energy and afflicted the late Prince of Luxembourg
POLG-related diseases disrupt the function of the mitochondria, or "powerhouses" of the cell — starving them of energy.
