红光疗法：神奇还是危险？

Red-light therapy promises to treat everything from acne and hair loss to depression and chronic pain, but could consumer devices be doing more harm than good? Graham Lawton investigates BETTER sleep, boosted mood, fewer wrinkles – these are just a handful of the supposed benefits of red light, delivered onto your skin via laser or light-emitting diodes (LEDs). Indeed, if the wellness industry is to be believed, simply bathing in a rosy glow for a few minutes a day can cure a whole host of ailments, from hair loss and acne to chronic pain and depression. Given the hype, you would be forgiven for thinking this is just a fad. …