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📊 The Truth Behind Wearables & Long COVID: Can Fitness Trackers Really Help?

The world is grappling with a silent crisis: long COVID and other post-infection lingering effects. With 65 million people having battled long-term symptoms and another 17 to 24 million still struggling, patients and doctors are desperate for solutions. Wearable devices like fitness trackers promise to help monitor recovery—but do they deliver?

A Deep Dive into the Science

A comprehensive review of existing research examined whether wearables can reliably track heart rate, activity levels, and other vital signs in people recovering from infections. Researchers scoured over 3,900 records, narrowing it down to 42 high-quality reviews covering 30+ brands and 150+ devices.

The Shocking Results

While some devices performed well in specific areas—such as tracking heart rate or detecting irregular heartbeats—the majority lacked strong evidence that they improve medical decisions.

Even worse? Most studies failed basic scientific standards. Device accuracy varied wildly depending on who was using them and where they were worn. Only two key functions—heart rate monitoring and atrial fibrillation detection—had reliable data backing them up. The rest? Far too inconsistent to trust completely.

What Does This Mean for Patients?

Wearables aren’t useless—but they’re not a one-size-fits-all solution. Patients and doctors should proceed with caution, relying more on clinical guidance than just device data alone.

The hunt for better tracking tools continues—but for now, wearables remain an imperfect ally in the fight against long COVID.