It is said that the energy on the earth mainly comes from solar radiation. If we compare the energy of the sun to money, then this is equivalent to the sun throwing 66 trillion dollars into space every second, of which only 30,000 reaches the earth, and only one is used by humans. Although the utilization rate of solar radiation energy is very low for human beings, human beings are actually inseparable from the sun. Without the sun, human beings will not only lose energy, but some of their own components cannot be synthesized normally, such as vitamin D. In addition, proper amount of sun exposure can also help humans enhance the absorption of calcium and phosphorus, as well as promote blood circulation and metabolism.
Therefore, no matter who you are, you can't help but bask in the sun. There are actually many other effects of sunlight, but most of them are not even understood by scientists. However, according to foreign media reports, Professor Carmit Levy (Carmit Levy) of Tel Aviv University in Israel and his team published an article titled “Skin exposure to UVB light induces a skin-brain-gonad axis and sexual behavior" paper.
In this paper, the researchers stated that they found that ultraviolet rays in the sun can promote the secretion of , testosterone, .
So what is going on? Let's talk about the findings of this paper this time.
Can sunlight increase sexual desire?
long ago,Scientists discovered the phenomena of light and electricity, but at the time they were still regarded as two completely different physical phenomena. However, with the research of scientists, Maxwell discovered that light and electricity can be unified, and light is essentially electromagnetic waves. There are many members in the electromagnetic wave family, and light is only the part that we can see with the naked eye.
Sunlight is actually composed of many electromagnetic waves, and the frequency and wavelength of different electromagnetic waves are different. In addition to the visible light visible to our naked eyes, there are also ultraviolet rays in the sunlight. We must know that some ultraviolet rays are actually not good for our body, and may even cause skin cancer. This is mainly because they belong to ionizing radiation, and there is a certain probability that they will affect the DNA in cells and cause cancer.
This time the scientists first started the experiment on animals. They found that whether males or females are exposed to UVV (abbreviation: UVV) under controlled conditions, small Circulating steroid hormones in mice will change significantly, and female mice's hypothalamic-pituitary-gonad axis hormone level will rise significantly, and the ovaries will increase and the estrus period will be prolonged. Not only that, the attractiveness between male and female mice is also significantly improved. Both males and females will show more willingness to mate. This shows that medium-wave ultraviolet rays significantly increase the libido of mice . To say one more thing, the medium-wave ultraviolet here refers to the sun's ultraviolet rays with a wavelength of 320-400 nanometers.
Through further experimental research,The researchers locked the P53 gene. They knocked out the P53 gene from the skin of the mice. One more sentence here, P53 gene is actually a kind of tumor suppressor gene , which can recognize the damage of DNA and use the conditions of sunlight to activate two self-protection mechanisms, namely DNA repair and pigmentation. , This can effectively prevent the negative effects of sunlight on skin cells and initiate a protective effect.
This time the researchers repeated the experiment with mice lacking the P53 gene and found that the libido of the mice did not increase significantly. That is to say, it is precisely because UVB can activate the P53 gene in skin cells, which triggers the skin-brain- gonadal axis .
After sunbathing, does a person's libido also increase?
After the animal experiment, the scientists recruited 32 volunteers to carry out the medium-wave ultraviolet light therapy experiment and asked them to fill in the experimental questionnaire. Through the questionnaire, we can know that after these volunteers received the ultraviolet light therapy test, whether they were men or women, their libido increased, and the men's aggressiveness also increased.
In order to further confirm, the researchers also did a comparative experiment. At the same time, subjects were given continuous sunbathing and passed blood tests, the results showed. After being irradiated by the sun, the body's testosterone levels increase significantly, which shows that sex hormones are also increased due to sunbathing.
This experiment shows that in addition to activating the protective mechanism, the P53 gene can also promote the increase of hormone levels related to biological reproduction and increase the sexual desire of organisms.
Summary
Although this study pointed out that exposure to the sun can help increase human libido.However, be aware that long-term exposure to the sun may also cause skin cancer. Therefore, the sunlight is not good. As the saying goes, talking about toxicity without a dose is a rogue. Proper sun exposure is good, and overdose will definitely do more harm than good.
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