Excessive smartphone use associated with early onset of puberty

Results of rat studiesPresented today at the 60th European Congress of Pediatric Endocrinology, these papers show that regular exposure to blue light from tablets and smartphones can affect hormone levels and increase the risk of precocious puberty. suggests that there is

Prolonged exposure to blue light was associated with early onset of puberty in female rats, along with decreased melatonin levels, increased levels of several reproductive hormones, and physical changes in the ovaries.

The use of blue-light-emitting mobile devices has already been linked to disrupting sleep patterns in children, but current results suggest that there may be additional risks to fetal development and future fertility. suggests.

Increased use of devices that produce blue light, such as tablets and smartphones, has been linked to poor sleep quality in children and adults. It delays the rise in melatonin levels that occurs in the evening to prepare the body for the onset of puberty. The complex process of menopause requires the coordination of numerous bodily functions and hormones.

Several studies in recent years have reported an increase in the onset of puberty in girls, especially during the COVID-19 epidemic. In addition, increased screen time, as experienced during the pandemic restrictions, may have contributed to this reported increase.

Researcher from Ankara, Turkey, Ph.D. Irene Kirin Uluru and colleagues used a rat model to examine the effects of blue light exposure on reproductive hormone levels and the timing of pubertal development. He irradiated three groups of six female rats each with a normal light cycle, 6 hours of blue light, or 12 hours of blue light.

Both groups were exposed to blue light, and the first signs of puberty began significantly earlier in both groups. In addition, rats exposed to blue light saw morphological changes in ovarian tissue, decreased melatonin levels, and increased levels of two specific reproductive hormones (estradiol and luteinizing hormone). All of these changes coincide with the onset of puberty. Rats exposed for 12 hours also showed evidence of ovarian inflammation and cellular damage.

We found that exposure to blue light sufficient to alter melatonin levels can alter reproductive hormone levels and cause early onset of puberty in a rat model. the longer the exposure.

Despite the fact that Dr. Aylin Kilinc Uurlu issued the following caveats: “Since this was a study in rats, we cannot be confident that these findings will be replicated in children,” the data were published in blue light. exposure is a potential risk factor for premature puberty. Onset.

Although it is difficult to use tablets to simulate the same level of blue light exposure in rats as in children, given their short lifespans, the age at which rats reach puberty is significantly closer to human age. Comparable.

Female rats undergo hormonal and ovulatory changes similar to humans during prepuberty and puberty. Thus, despite the study’s limitations, these findings favor future studies of the potential effects of blue light exposure on hormone levels and the onset of puberty in adolescents.

The cellular damage and inflammatory consequences associated with prolonged blue light exposure can have long-term effects on reproductive health and fertility, so the team plans to investigate these effects. In addition, we plan to investigate whether using a ‘night light’ mobile device feature that minimizes blue light mitigates the effects seen in the rat model.

Despite the lack of evidence, Dr. Aylin Kilinc Uurlu continued, “We recommend limiting the use of devices that emit blue light in prepubescent children. Especially at night, when exposure is most hormonal. because it can affect the


Source: Ani Excessive smartphone use associated with early onset of puberty

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