Breakthrough

Breakthrough

AI in medicine: this week's essentials

A watch for essential tremor, ever-improving diagnostic models, and predicting cardiac arrest risk

Samuel Hume's avatar
Samuel Hume
Jul 05, 2025
∙ Paid

A watch for essential tremor

Essential tremor is pretty common – it affects about 1% of us. And more-so as we age: about 20% of those of 90 are affected. It causes shaking, usually in both hands (unlike Parkinson’s, whose pathology is very different and which is usually one-sided) and it gets worse with stress (or when you really don’t want to be shaking – like if you’re drinking a cup of hot tea).

This is a watch to help essential tremor. Cleared by the FDA this week, it’s called Felix (made by Fasikl – based in Minnesota). The best thing is to watch it go – it’s pretty impressive!

How it works is genuinely fascinating:

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