There is little scientific evidence that mobile health technologies reduce cardiovascular risk factors, but they may encourage healthier lifestyles. This is the message from the American Heart Association in a new statement published in the journal Circulation.
A man monitoring his heart rate
Around 20% of Smartphone users have one or more health apps on their device, the most common of which track physical activity or heart rate.

Wearable health trackers and Smartphone apps have taken the world by storm in recent years. Around 20% of Smartphone users have one or more health apps on their device, and a 2014 report by Nielsen found 1 in 6 of us use wearable technology - such as fitness trackers - on a daily basis.

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