Smartwatch

Smartwatches can help improve our health and fitness. But a new report says it's important to consider what kind of bands we put on them, as several popular brands were found to contain high levels of a class of chemicals linked to health issues.

A good smartwatch might be your best friend if you're at risk of various heart conditions. Many not only track heart rate, but can also take electrocardiogram (ECG) readings, and evidence is building that they can spot or predict a range of issues.

A new algorithm can effectively detect patients with a dangerous heart dysfunction using ECG data gathered by an Apple Watch. A large trial is now currently underway looking to test the clinical utility of the algorithm in one million people.

It's important for people with conditions such as depression and anxiety to know when they're becoming stressed, so they can initiate coping strategies. An experimental smartwatch could someday warn them, by detecting a stress hormone in their sweat.

Heat stroke is one of those things that can really sneak up on a person, potentially resulting in death if not quickly rectified. A new smartwatch-based system is designed to help, by warning its wearer before it's too late.