Browsing: light

Sleeping in dark conditions may be important not only for quality sleep but also for heart health

Exposure to light during nighttime sleep may lead to potentially harmful changes in the structure and function of the heart, according to a study published Wednesday in the European Heart Journal

Advertisement Updated: 1:06 PM EDT Sep 10, 2026Editorial Standards ⓘ CNN Updated: 1:06 PM EDT Sep 10, 2026Editorial Standards ⓘ CNN

Even a small amount of light exposure during sleep may change the shape and function of heart muscles, increasing the risk of future heart disease, a new study found

Red light therapy started out almost exclusively in clinics, dermatology offices, physical therapy practices, places with a professional operating the equipment and a price tag to match. Over the past several years, that changed. Panels and masks shrank, prices dropped, and the technology found its way onto bedroom floors and home gym walls, sold direct…

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