The research results were published in the international academic journal “Science Advances” on June 11. The discovery is the result of a six-year experiment. In the experiment, the scientists stored freeze-dried mouse sperm on the International Space Station (ISS) and exposed them to radiation.

Healthy offspring from freeze-dried mouse sperm stored on the International Space Station

Researchers once thought that radiation in space would damage the DNA in cells, and may inherit mutations in future generations, making reproduction impossible. Cancer caused by radiation is another worrying issue.

Sayaka Wakayama, a member of the research team and a scholar at Yamanashi University in Japan, said that the lack of freezers on the International Space Station hindered long-term research on living cells. Moreover, even the current NASA space radiation cancer risk model is based on data from Hiroshima and Nagasaki atomic bomb survivors, “not from real space experiments.”

To overcome these limitations, the researchers freeze-dried sperm samples from 12 mice, sealed them in small capsules, and transported them to the International Space Station by rocket without the need for a freezer.

“Unlike the Earth’s surface, there are many different types of radiation in space. For example, heavy ions, protons, and electromagnetic waves from solar flares,” Wakayama explained. “It is very difficult to irradiate and replicate all these types of radiation on the ground at the same time. , So I think DNA damage in biological samples can only be measured in space.”

Schematic diagram of freeze-dried sperm preparation and the types of experiments performed

Scientists regularly test a small number of samples, send some of them back to Earth after 9 months, and leave the other two batches on the International Space Station for 2 years and 9 months and 5 years and 10 months respectively. After testing, the researchers found that freeze-dried sperm stored on the International Space Station for a long time did not cause DNA damage.

Studies have pointed out that when rehydrated sperm cells are injected into fresh ovarian cells and transferred to female mice, “healthy space pups” will be born.

The researchers said that although X-rays and space radiation damage DNA differently, it is roughly predicted that freeze-dried sperm “can be stored on the International Space Station for more than 200 years without causing damage to DNA.”

A total of 168 pups were born from sperm stored in space for 6 years. Compared with control mice born from sperm preserved on Earth, these “space pups” have normal appearance and genetic activity. mode.

Scientists believe that more studies from similar airborne experiments can reveal the effects of radiation and the tolerance of life forms that stay in space for a long time.

The Mars rover is roaming on Mars

These discoveries are crucial for mankind to enter the space age. At present, Mars probes from the United States and China are roaming on Mars, trying to find signs of life. In the future, there are plans for manned missions to Mars.

Southern Reporter Shi Minglei

Healthy mice were created from freeze-dried sperm stored for 6 years in space. Photo: Teruhiko Wakayama. A new study shows that rat sperm that was freeze-dried and stored on the International Space Station (ISS) for nearly six years didn’t suffer any DNA damage and went on to produce “mice pups” healthy”. The study was published June 11 in the journal Science Advances . According to the scientists, this discovery sheds more light on whether mammals, including humans, can reproduce in space. Combined with ground-based experiments exposing mouse sperm to X-rays, the study found that mammalian sperm cells can be preserved on the International Space Station for up to 200 years. Researchers have long thought that exposure to space radiation can damage the DNA in cells and lead to the possibility of passing mutations on to offspring. The lack of freezers on the ISS has prevented long-term research into living cells. To overcome these limitations, the researchers frozen dried sperm samples from 12 mice and sealed them in small, lightweight tubes and transported to the ISS by rocket without the need for a freezer. Mouse sperm were freeze-dried in glass tubes and stored on the ISS . Photo: Teruhiko Wakayama. Because of the complex mix of different types of radiation in space, scientists say, only simulation experiments to assess DNA damage on Earth cannot capture the reality of conditions. outside our atmosphere. Dr. Sayaka Wakayama, Yamanashi University, Japan, lead author of the study told The Independent : “There are different types of radiation flying around in space, unlike on the ground. For example, there are heavy ions, protons and electromagnetic waves from the rays of the sun.” “It’s very difficult to irradiate and reproduce all these types of radiation at once on the ground, so I think DNA damage in biological samples can only be measured in space,” he explains. . Scientists periodically test small portions of the sample. The samples returned to Earth after 9 months, 2 years 9 months, and 5 years and 10 months, respectively. Mouse embryos developed normally in the laboratory after fertilization with freeze-dried sperm and stored in space. Photo: Teruhiko Wakayama. When the researchers examined the samples using instruments that measured how much radiation they had absorbed and performed tests to assess DNA damage in the cell nuclei, they found a long stay. Long duration on the ISS did not result in DNA damage to freeze-dried sperm. Dr Wakayama said: “The total amount of space radiation absorbed by the ISS, as measured by the Japan Aerospace Exploration Agency (JAXA), is 0.41 milli Gray (mGy) per day. Meanwhile, typical radiation doses used to treat cancers such as solid epithelial tumors range from 60 to 80Gy. “The results of the ground X-ray experiment show that freeze-dried sperm can withstand up to 30 Gy and still be able to produce the next generation,” added Dr Wakayama. The freeze-drying process used in the study is “similar to instant coffee, or freeze-dried fruit,” explains Dr. Wakayama. With food, just adding water can be used “instantly”. The freeze-drying process kills sperm, but when rehydrated and injected into a mouse egg, the sperm can still fertilize the egg, then develop normally. The rehydrated sperm cells, when injected into fresh ovarian cells and transferred to female mice, resulted in the birth of “healthy pups”. Mouse sperm that has been preserved in space for years is injected into egg cells. Photo: Teruhiko Wakayama. Although there is a difference between DNA damage caused by X-rays and space radiation, it can be roughly predicted that freeze-dried sperm can be preserved on the surface of the body, the scientists wrote in the study. ISS for over 200 years”. According to the scientists, a total of 168 mice were born from sperm kept in space for six years, all of which were normal in appearance and had no abnormalities in their gene activity patterns. compared with control mice born from sperm preserved on Earth. Some of these mice were raised to adulthood and were able to produce healthy offspring. Scientists believe that more studies from similar experiments could shed more light on radiation effects and the tolerance of life forms for long periods of time in space. Scientists are also conducting research to find out whether mammalian embryos can develop in zero-gravity conditions. Proposals for this experiment were approved by NASA and JAXA in 2015. In August, frozen mouse embryos will be launched to the ISS, where astronauts will thaw and culture in zero gravity.

Gradually, she was convinced because after using this “super cheap” mask, the shop owner’s facial skin was much more beautiful – no more acne, wrinkles also faded. Oanh also crept to try it, although it was a bit horrible. That night, after the “communication”, she volunteered to bring her “raincoat” to throw it away and did not forget to go to the toilet to smear it. Contrary to whispers, after about 10 minutes her face started to burn, she hurriedly went to wash it. The next morning, Ms. Oanh’s entire face was itchy, swollen, and had a rash… So bad she had to go to the hospital. Doctors said she was allergic to semen. “Fortunately I only have a mild allergy, but if I had anaphylaxis then… I don’t know what to do now. The doctor said that there are people who accidentally apply skin lotion to their eyes and can also contract sexually transmitted diseases (gonorrhea, syphilis) if the man has the disease, “Oanh said. Are sperm masks really as effective as rumored? Share with reporters Infonet, Dr. Dr. Nguyen Hoai Bac, Head of the Department of Andrology and Sex Medicine, Hanoi Medical University Hospital, said that although there is some evidence to prove that semen can be beneficial for the skin, more evidence is still needed. Scientific evidence proves this. The idea that semen can benefit skin health, he says, stems from the small evidence that nutrients in semen can benefit the skin. Accordingly, researchers based on the properties of semen have listed a number of nutrients present in semen. Include protein: Collagen is a protein that can benefit skin health, collagen supplements can improve skin moisture and elasticity, and make skin softer. Zinc is present in semen with antioxidant properties and can help prevent skin damage caused by UV exposure. Magnesium may benefit dry skin by reducing inflammation and boosting hydration and urea: Low doses of urea can be helpful for moisturizing skin. In addition, there are also some people, according to Dr. Hoai Bac, who believe that semen can help treat and improve acne. “This stems from the idea that an organic compound, found in semen, contains antioxidant and anti-inflammatory properties. But there is no scientific evidence to support the use of semen as a treatment for acne,” Dr. Dr. Hoai Bac emphasized. In addition, semen contains a chemical called spermidine, which is responsible for the smell of semen. A 2021 study notes that spermidine, when secreted from streptococcus bacteria, may contribute to skin repair by encouraging collagen synthesis. The amount of spermidine in semen may be too low for younger-looking skin. But many foods are high in spermidine, such as citrus fruits and green peppers. That does not mean that you have to apply semen to your face to replenish the amount of spermidine. Although semen contains nutrients beneficial to the skin, Dr. There is very little scientific evidence to prove that using or consuming semen topically can improve skin health and appearance, says Dr. Nguyen Hoai Bac. Meanwhile, when using this type of mask, women will have to face potential risks. “Applying semen on the skin carries a number of risks, including: STIs (sexually transmitted diseases such as gonorrhea, chlamydia). This is because applying semen contaminated with sexually transmitted diseases such as chlamydia or gonorrhea to the face, if it accidentally gets in the eyes, can lead to an STI. In addition, gonorrhea can affect the skin and can cause a rash,” Dr. Dr. Nguyen Hoai Bac emphasized. Not only that, some people also have an allergic reaction after coming into contact with semen. The case of Ms. Oanh (Cau Giay) is a typical example. Accordingly, a person who is having an allergic reaction to semen may experience symptoms: itching, swelling, rash, even anaphylaxis, dermatitis … just because semen is applied to the face. “As with any product that a person may use on the skin, using semen on the skin carries the risk of skin irritation. Although semen contains nutritional properties and ingredients that may benefit the skin, in small amounts, there is therefore not any skin or hair benefit through topical use of semen. “, Dr. Doctor Nguyen Hoai Bac confirmed. Agreeing with this point of view, dermatologists recommend that women should not take their face out to test how to beautify skin with sperm. Because everything related to health, once it wants to be widely used in the community, it must be based on medical evidence with clinical trials to verify its effectiveness. Uninformed beautification in the style of leaking ears can have incalculable consequences.

Specifically, under a comment praising Ryun Jin’s rapping part of a fan, Owen replied: “Yes, because she was conceived and born of my sperm”.

The male rapper deleted the comment, but the netizens quickly took it again. Many expressed dissatisfaction at Owen’s rude comment. The male singer was also accused of sexually harassing a member of the ITZY group.

Owen Ovadoz was blurred in Show Me The Money after a series of blasphemy statements.

This is not the first time Owen has been accused of sexual harassment. The male singer was caught in a wave of criticism with the saying: “I can’t help but see these white girls, I want to rape them”.

In addition to sex, the show’s contestant Show Me The Money also created outrage when his drug use reports were made public. The criticism was so much that the rapper had to leave Mnet’s show. He even blurred his image when the show aired.

Not stopping, when the Black Lives Matter movement became famous on social networks, Owen Ovadoz also made a racist statement. “Why do I have to admit the black fight. I don’t care what it is,” Owen said in live fan chat.

According to the Insight, After countless controversies, the male rapper was not noticed for his talent and almost disappeared. It was not until the controversial comment about Ryun Jin (ITZY) that Owen was noticed again. Currently, Owen Ovadoz has not made a move to apologize to the female singer of the ITZY group.

Semen is released during sex when the man has reached orgasm. Semen contains sperm and is known for its primary function as fertilization. However, many women transmit sperm to each other with a new function of beautifying the skin. So what is this effect of damage?

According to oral experience of some people, after applying directly or masking spermatozoa with other fruits, facial skin becomes smoother and more youthful. Moreover, this is a natural beauty measure, without worrying about side effects of chemicals. This information makes many women excited, so even though it is a bit disgusting, they are still determined to try this beauty method which is called “miracle”.

When it comes to beauty with sperm, everyone thinks immediately where to get sperm? Many sisters squeezed out their husband’s exhaustion to get sperm to take care of the skin. It is not difficult for some other people to find sperm that is sold quite publicly on the Internet. Currently, many subjects such as male students, workers … are also ready to provide semen to the beauty sellers. Buying sperm is not difficult, but the price is quite high and no one can verify that the sperm has germs or not?

In fact, semen released from the man’s body each time to the top consists of many beneficial minerals. Semen and sperm itself contain vitamin C and vitamin B12. These are two substances found in many skin care products because they help rejuvenate the skin. At the same time, semen also contains sugars, proteins and amino acids, minerals, vitamins, hormones, lactic acid, urea, uric acid and nitrogen. The above substances all work on the body. However, whether it is a good effect or not depends on dosage and purification, combination. All such products have been treated to remove harmful substances. There is also no way of beauty with sperm “fresh” as people say.

Sisters rumored each other about the beauty effects of sperm without understanding the problem. Sperm preservation from the time it comes out of the body is very important. In the vaginal environment, sperm live for up to 5 days, but in the wild, after 30 minutes, they begin to die and lose their effectiveness. At that time, women who applied on the face not only did not work but also faced the risk of allergies, especially with sensitive skin. To preserve, we have to use cold nitrogen – 196 degrees Celsius.

Women need to pay special attention, when using semen of unknown origin, people are also at risk of contracting dangerous diseases such as gonorrhea, syphilis, HIV infection, hepatitis B … facial skin with open wounds or acne, absolutely do not arbitrarily apply semen on the face because at this time the risk of infection is very large.

Another risk is that the beauty effect you get is not worth the money and effort you put into it. This may be because you meet unprofessional practitioners, use fake products, or simply because the sperm products don’t work as advertised.

With “home grown” sperm, although it may be safer to use, however, doctors recommend that women absolutely should not force her husband to ejaculate to get semen. That both inhibits the male nerves and makes them more susceptible to metastases.

There are some records that in the Middle Ages, people used sperm masks to rejuvenate the skin. However, it is difficult to verify the accuracy of these documents. Furthermore, the science of the Middle Ages is much more limited than today. In fact, in the world there are studies and use of sperm in beauty, even drinking sperm, but this is only personal, but there is no scientific confirmation or method of use. specific tools. In our country, the testing is only conducted by a number of specialists or clinics without any official announcement.

Women should not take their face out to test how to beautify their skin with sperm. Because everything related to health once it is put into widespread use in the community must be based on medical evidence with clinical trials to verify the effectiveness. All rumors are baseless and can have immeasurable consequences.