Recent Blog Articles

If cannabis becomes a problem: How to manage withdrawal

Corneal transplants becoming more common

An emerging treatment option for men on active surveillance

Gun violence: A long-lasting toll on children and teens

Adult female acne: Why it happens and the emotional toll

Talking to your doctor about your LGBTQ+ sex life

Untangling grief: Living beyond a great loss

Thunderstorm asthma: Bad weather, allergies, and asthma attacks

Heart problems and the heat: What to know and do

I’m too young to have Alzheimer’s disease or dementia, right?
Heart Health
Heart rhythm monitoring with a smartwatch
These wrist-worn devices are better than ever at gathering data. But it's still too early to use them to screen for atrial fibrillation.
The original wristband monitors were pretty basic: they tracked your movement and tallied your daily steps. But before long, these digital devices could also estimate your heart rate, thanks to a sensor that measures changes in blood flow through your skin. Now, there are smartwatches with special sensors that can record a tracing of your heart's electrical signature (electrocardiogram or ECG) and alert you if it detects an irregular rhythm.
Last fall, the FDA granted Apple approval for the ECG sensor and an app that includes an algorithm to detect atrial fibrillation, or afib, the most common heart rhythm disorder (see "What is atrial fibrillation?"). While the Apple Watch Series 4 is the first of its kind to offer this feature, other companies have similar technologies in the works.
To continue reading this article, you must log in.
Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.
- Research health conditions
- Check your symptoms
- Prepare for a doctor's visit or test
- Find the best treatments and procedures for you
- Explore options for better nutrition and exercise
I'd like to receive access to Harvard Health Online for only $4.99 a month.
Sign Me UpAlready a member? Login ».
Disclaimer:
As a service to our readers, Harvard Health Publishing provides access to our library of archived content. Please note the date of last review or update on all articles.
No content on this site, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.
Free Healthbeat Signup
Get the latest in health news delivered to your inbox!