Does the Temple wearable reveal useful information about brain health?
Billionaire Deepinder Goyal has begun selling Temple, a temple-attached wearable he says can monitor brain health and ageing by measuring cerebral blood flow outside the lab. Critics and doctors question the device’s medical claims, noting the evidence is preliminary, not peer-reviewed, and its core metric—the Brain Flow index—remains controversial amid concerns over links to longevity or…
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