Trump's Health Secretary RFK Jr. wants every American to wear a fitness tracker and "take control of their health" – but we have questions

• US Health Secretary Robert F. Kennedy Jr. says every American should own a wearable
• The plan could bring major benefits, but also comes with risks
• We don't have much information about what the plan entails

The best smartwatches and other fitness wearables offer huge potential when it comes to helping us manage and improve our health – and now US Health and Human Services (HHS) Secretary Robert F. Kennedy Jr. has said he'd like to see every American wearing some form of health or fitness device.

“My vision is that every American is wearing a wearable within four years,” he said at a congressional hearing last week. To that end, his department will soon begin one of “the biggest campaigns in HHS history” that it says will help Americans “take control over their own health.”

Right now, the plan is short on specifics. We don ...