If you’re wondering if exposure to blue light could lead to early puberty, you may not want to check your smartphone often for the answer. More and more studies are increasingly shedding light on the potential risks of using such portable blue light-emitting devices. A study was made On September 16th in 60th Annual European Society of Pediatric Endocrinology Meeting It has been found that exposure to blue light is associated with decreased levels of melatonin, increased levels of two major reproductive hormones (estradiol and luteinizing hormone), and changes in ovarian tissue that may indicate the onset of early puberty in females. In fact, the changes occurred even after only six hours of exposure to blue light, which is really not that long. It’s the amount of time it will take to watch a “Baby Shark Dance” YouTube video only about 159 times, depending on how many ads have to be clicked along the way.
Now, if you said “rats” for this study, you were right. The subject of this study was not humans but female mice and rats. As described by the study summary, a team from Gazi University Faculty of Medicine in Ankara, Turkey, (Aylin Kilinc Ogurlu, Aysun Bedeci, Ayşe Murshid Demirel, Gülnur Tek Kaplanoglu, Dwigu Dianier, Ozlem Gulbahar, Tuba Saadet Devici Bulut, Isordan Uroger) divided 18 immature female rats from Gazi University in Ankara, Turkey. Sprague Dawley into three groups of six mice each. In this case, “immature” doesn’t mean they say “whatever” a lot. That meant they were 21 days old and not yet puberty. Six of the mice were in the control group under standard 12-hour light and 12-hour cycles typical of ‘normal’ conditions. Six other mice underwent six hours of exposure to blue light (450–470 nm/irradiance level 0.03 U W/cm2). A third group of six mice was exposed for a longer period (12 hours) to blue light.
While the female rat in the control group entered puberty on average on the 38th day, those in the six-hour blue light exposure group entered puberty significantly earlier, on average on the 32nd day. Those in the 12-hour blue light exposure group started puberty even earlier, on the average day 30. Longer periods of blue light exposure were associated with early puberty in mice. The researchers also found significantly higher levels of LH and estradiol levels among those mice with at least six hours of exposure to blue light compared to the control group. Additionally, prolonged exposure to blue light is associated with lower levels of melatonin. The discovery of signs of inflammation, such as aneurysms and fluid buildup in the ovaries, provided further evidence that the mice had already entered adulthood. In fact, the research team found PCOS-like (PCO-like) changes in female mice exposed to blue light.
Of course, humans aren’t rats, at least not in a physical sense, no matter what you think of your school and co-workers. Rats differ from humans in various ways such as body size, number of days prior to the onset of puberty, life expectancy, and tendency to wear potatoes. It would be distressing for a human infant to start puberty after only 38 days. Therefore, not all rat studies necessarily apply to you or your children, assuming you don’t have whiskers and a tail. Plus, it wasn’t as if the study gave the mice a few smartphones and Instagram (or maybe Instacheese) accounts. Although the researchers attempted to simulate blue light exposure from smartphones to some extent, the study was not able to replicate the exact conditions associated with human smartphone use.
In addition, the minimum for presenting a study at a scientific meeting is much lower than the minimum for its publication in a peer-reviewed scientific journal. What is presented at scientific meetings can be a mixed bag of very good studies, good studies, good studies, and not so good studies, and that won’t make for a real respected scholar. Periodic studies.
However, this latest study does provide a good glimpse into what could be a growing problem. Before you say that mice go through puberty isn’t the same because they don’t listen to Taylor Swift or Nirvana, keep in mind that mice usually progress through hormonal changes and ovulation prior to puberty and puberty as humans do. To adapt to differences in life expectancy, mice already begin puberty at similar stages of life as humans do.
Additionally, consider this yet another evidence that excessive exposure to blue light can mess with your body and your children’s body in different ways. This is certainly not the first study to raise concerns about how exposure to blue light affects human hormone levels. For example, previous studies have found associations between exposure to blue light and changes in melatonin And the cortisol levels. This video from Hamilton Health Sciences in Hamilton, Ontario, Canada, showed how blue light can affect the pineal gland’s secretion of melatonin:
Studies have found that the use of portable devices that emit blue light is associated with disturbances in sleep patterns that are likely caused at least in part by changes in melatonin levels. And your melatonin levels, on average, tend to be higher just before entering puberty. Melatonin acts in some ways like Wilson Phillips does and says “hold on” to your body to prevent early onset of puberty.
Then there’s all that “ex” back directory out there. Over the past decade or so, As covered by Jessa Gamble for temper natureThe researchers note how, on average, girls enter puberty at an earlier age and at an earlier age. There have been reports of girls gaining breast implants as young as six years old. The concern is that this may be a result of an increased amount of artificial hyacinth around us as more and more chemicals are in the environment, more and more things are being added to food, and more and more blue light.
Remember, it’s not clear how many tech companies said, “Oh my God, I wonder how all this is going to affect everyone’s health” before rolling out all the smartphones, apps, and social media stuff that’s now rampant in our community. Just because everyone seems to be using something doesn’t necessarily mean the thing is 100% safe. So you don’t really know what using smartphones and similar devices all the time can do to you. More studies are needed to shed more light on the topic and ways to protect yourself. In the meantime, you may want to do your best to limit your and your children’s exposure to blue light.
Let’s remember the timeless words of Eiffel 65, who first said in 1998, more than two decades ago, “Hey, listen. Here’s a story about a little man who lives in a blue world. And all day and all night. And all he sees is blue like him inside and out.” Maybe that song wasn’t about exposure to blue light at the time. But things these days can look a little blue in more ways than one.
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