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Excessive Smartphone Screen Time Linked to Earlier Puberty Onset

Medical Xpress
Photo: Unsplash/CC0 Public Domain

medicalxpress.com

Exposure to blue light, via regular use of tablets and smartphones, may alter hormone levels and increase the risk of earlier puberty, according to data from a rat study presented today at the 60th Annual European Society for Pediatric Endocrinology Meeting.

Longer duration of blue light exposure was associated with earlier puberty onset in the female rats, which also showed reduced levels of melatonin, increased levels of some reproductive hormones and physical changes in their ovaries. Use of blue light-emitting mobile devices has previously been linked to disrupted sleeping patterns in children but ...