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Understanding how the body works — and what happens when things change — is paramount to improving the health and wellbeing of every person on the planet. Our team of expert health writers and editors are here to demystify the latest medical advances, explain how the latest health news affects you, and help you understand which exercise equipment can really help improve your fitness. Whether you're after facts about the human body or the secrets to extreme longevity, our health articles and features aim to leave you better informed, up to date with the latest discoveries, and even more curious about human health.
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![A 3d rendering showing purple rod-shaped bacteria with small hair-like structures](https://cdn.mos.cms.futurecdn.net/cDxu36gob5cbn55qP7LHt8-320-80.jpg)
For C. diff, antibiotic resistance comes at a cost
By Michael Schubert published
Researchers have identified two distinct mechanisms of drug resistance in C. difficile, but its ability to withstand antibiotics comes with downsides for the bacteria.
![A man in a wheelchair with wires around his head sits facing a computer screen](https://cdn.mos.cms.futurecdn.net/CXYBa5ShjFfztrJCiNfvGW-320-80.jpg)
AI and brain implant enables ALS patient to easily converse with family 'for 1st time in years'
By Nicholas Card published
A researcher describes the technology behind a device that translates thoughts into words for people who cannot otherwise speak.
![The Withings Scanwatch Hybrid smartwatch on an orange background.](https://cdn.mos.cms.futurecdn.net/NznQGTRtBTECeYMtL8yKbD-320-80.jpg)
This could be your last chance to buy the 'world's first analog watch with clinically validated ECG'
By Anna Gora published
Deals The Withings ScanWatch Hybrid is now 20% off at Best Buy's Clearance Sale.
![A woman checking her fitness tracker during workout](https://cdn.mos.cms.futurecdn.net/Tv3pFjAZ7rHVriTpz3CiM4-320-80.jpg)
Best fitness trackers 2024: Measure steps, sleep, calories and more
By Andrew Williams, Anna Gora last updated
Buying Guide These are the best fitness trackers you can buy in every category, from Apple Watch Series 8 and Garmin Fenix 7 to Amazfit Balance.
![An artist's rendering of strands of DNA with a cutout](https://cdn.mos.cms.futurecdn.net/uYbtWLaR5V8Csw6VvjBk45-320-80.jpg)
CRISPR could soon be used to edit fetal DNA — are we ready?
By Julia Brown published
Medical anthropologist and bioethicist Julia Brown says scientists and nonscientists need to talk about whether and how we should use CRISPR to edit the fetal genome.
![illustration of brain with inset image of coronavirus](https://cdn.mos.cms.futurecdn.net/GdbJi5AwagULeESMSLgu4m-320-80.jpg)
Virus that causes COVID-19 uses a secret 'back door' to infect the brain
By Michael Schubert published
A mutation on the spike protein of the virus that causes COVID-19 could help it infect the brain by forcing it to use a cellular "back door."
![an illustration of a large pair of scissors cutting through a DNA molecule against a black background](https://cdn.mos.cms.futurecdn.net/ZMLi5HRoUvvwUMkCUY6oUX-320-80.jpg)
'Enhancing' future generations with CRISPR is a road to a 'new eugenics,' says ethicist Rosemarie Garland-Thomson
By Rosemarie Garland-Thomson published
"Eugenics seeks to improve by eliminating the characteristics considered at a particular time and place to be disadvantages and to maximize those considered normal."
![An illustration showing silhouettes of hands using scissors and tweezers on strands of DNA](https://cdn.mos.cms.futurecdn.net/gSwixoFpjGgaBHCASxnRXW-320-80.jpg)
'Who are we to say they shouldn't exist?': Dr. Neal Baer on the threat of CRISPR-driven eugenics
By Nicoletta Lanese published
Dr. Neal Baer discusses a new book about the incredible promise and potential pitfalls of CRISPR gene-editing technology.
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