Question 286 of 433
Does red light therapy work?
The short answer
For skin and hair, modestly. For one eye disease, yes, with a medical device. For energy, recovery, and longevity, it is unproven.
Red and near-infrared light is absorbed by mitochondria and may stimulate cell activity. Small trials show modest improvement in wrinkles and skin texture. Laser caps and combs are FDA cleared for common hair thinning and do increase hair density. In late 2024 the FDA authorized an in-office light device for dry age-related macular degeneration after a trial showed improved vision.
Home panels and masks are low-risk if you protect your eyes. Whether they do anything deeper than the skin is not established. Claims about testosterone, fat loss, and brain function are far ahead of the data.
“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
HUMAN TRIALS for selected skin, hair, or eye devices; NOT DEMONSTRATED for general longevity panels.Evidence grade (draft mapping)FNot demonstrated / insufficientPart 20, Q286 · 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.