Question 53 of 433
Are sleep trackers and smart rings accurate?
The short answer
Good for total sleep time, resting heart rate, and trends. Poor at telling deep sleep from light sleep.
Use the device to notice patterns: that two glasses of wine raise your overnight heart rate, that late dinners shorten your sleep. Do not let a “sleep score” tell you how you feel. Sleep doctors now see patients whose insomnia was caused by worrying about their tracker. If the device makes you anxious, take it off.
“This book is for education. It is not medical advice, and reading it does not make you my patient or create a doctor-patient relationship.” From the book’s medical disclaimer. Full disclaimer
VALIDATION STUDIES — Consumer devices: sleep and pulse estimates vary by device; stage estimates do not replace clinical testing.Evidence grade (draft mapping)Grade pendingPart 4, Q53 · Part sources
From Longevity Unmasked by Afshine Ash Emrani, MD, FACC. Medical disclaimer. This book is for education. It is not medical advice, and reading it does not make you my patient or create a doctor-patient relationship. Nothing here is meant to diagnose, treat, cure, or prevent any disease. Medicine is personal: a test, drug, supplement, or exercise plan that helps one person can harm another. Do not start, stop, or change any medication or treatment because of something you read in these pages. Talk with a licensed clinician who knows your history first. If you think you are having a medical emergency, call 911. The author disclaims responsibility for any loss or harm arising from use of the information in this book.