Cancer?Fervable?Nuclear medical experts interpret the harm of Japanese nuclear wastewater discharge sea.

On August 4, 2022, CCTV News reported that the nuclear sewage sewage sealing plan of the Fukushima first nuclear power plant in Japan was officially started. As early as one year ago, on September 26, 2021, when Japanese Prime Minister Toyi Yoshihisa inspected the Fukushima First Nuclear Power Station, he asked whether the nuclear sewage after treatment could drink. "If you are diluted, you can drink it, but the Prime Minister does not drink it. Later, the video that did not believe even his own words quickly circulated on the Internet.

It is understood that although the discharged nuclear waste water can reduce the concentration of most radioactive substances below the standard line through professional nucleo -removal equipment, whether it can be removed, it is only diluted, but the total amount is still huge. At present, it is known that it contains containing it. Radioxidal (3H), iodine (129i), 锶 (90SR) and other nucleo are residial. What impact will it affect the human body in these radioxin? Will it really cause human cancer or genetic mutations?

In this regard, NetEase Health specially consults the deputy director of the Peking Union Medical College Medical Division, Professor Lin Yansong, a doctorate instructor of the School of Nuclear Medicine, Chinese Medical Sciences, the chief physician of the Department of Nuclear Medicine, the First Hospital of Shanxi Medical University Division of Qiu Liheng at the Department of Nuclear Medicine of the People's Hospital and Dr. Shi Cong of Beijing Union Hospital, let's take a look.

NetEase Health: How does the "3H" remaining in the nuclear waste water enter the human body? What impact does it have on the human body?

Lin Yansong: Thanks to NetEase's healthy invitations. I want to invite me because I am a nuclear medical doctor with long -term and radioactive nucleo. First of all, I want to emphasize that the clinical projects of nuclear medical diagnosis and treatment of nuclear medicine carried out in my country are safe. The diagnostic examinations are all low -dose and short half -life nucleo, and the treatment nucleo, such as 131I, only targets the low -dose nucleoin that only targets the lesion area. The reason why the Fukushima issue has attracted everyone's attention is mainly due to the large dose and long half of its radioactive nucleo.

3H is the homogenin of the hydrogen element. It is the composition element of water that we maintain the water of human survival. The radioactive 氚 mainly exists in the form of water. It can easily enter the human body through the skin, respiratory tract, and digestive tract. At the same time, through metabolism, 3H will also enter various organic molecules to become its components. The physical half -life of 3H is about 12.33 years, which means that it will only be transformed into a stable element after more than 12 years.

The long -term irradiation caused by entering the human body can cause symptoms such as fatigue, drowsiness, loss of appetite, nausea, and upper abdomen tenderness. After accumulating a certain dose, chronic radiation diseases may be caused.

Netease Health: Is 129i and 90SR radioactor toxin? Will it cause cancer?

Lin Yansong: The 129i and 90SR remaining in the Fukushima nuclear waste water are categorized according to toxicity. But 129i takes a long time to change, and its physical half -life is about 15.7 million years.

129i decay is one of the main sources of long -term hazards of radioactive waste. 129i likes the "pit" gland. After being absorbed by the human body, it will be selectively collected in the thyroid gland, which may cause permanent sustainable damage to the thyroid tissue. In addition, exposure to radioactin in childhood will significantly increase the risk of thyroid cancer. And the younger the exposure, the higher the risk of cancer after adulthood.

The radioactivity of 90SR takes 28.8 years. Because it is similar to the chemical properties of calcium, the 90SR intake by the human body will replace calcium and participate in bone metabolism. In the middle and long -term deposition of bone tissue, tumors that may induce bones and surrounding tissues.

Netease Health: It is said that the 14C contained in nuclear waste water is dangerous within thousands of years. Is this that?

Lin Yansong: The 14C physical half -life in the nuclear waste water is about 5730 years, which can be stored in the middle of the sea for a long time. After the layers of richness and concentration of the marine biological food chain, it is likely to enter the human body.

Everyone may notice that 14C will also be used in some medical examinations. For example, 14C exhalation tests are used when checking H. pylori. Maybe someone will have questions. Will these inspections be harmful to the human body?

In fact, there are very strict use standards for 14C medical medicine. Do a radiation dose of 14C exhalation experiment in less than 1 μCI (37KBQ). It is safe to do 14C exhalation experiments.

However, based on safety considerations, we clinically recommend pregnancy, pregnant women, lactating women, and children's preferred 13C exhalation tests.

Netease Health: The diluted concentration of nuclear waste water will become lower. Is there no problem with seafood, can you rest assured?

Lu Keyi: Although the diluted concentration of the Fukushima nuclear waste water will become low, the continuous enrichment of the marine biological food chain will continue to condense radioactive nucleoin. As the top of the food chain, human beings indirectly intake various radioactive substances in the seawater by eating seafood. The accumulation of radioactive substances in the human body is likely to exceed the safety dose.

Special reminder: For the sake of their own safety, try to consume the seafood with formal channels that pass the radial nucleo level.

NetEase Health: As soon as the news of the Japanese nuclear wastewater discharge of the sea came out, many people were worried that the sea salt could not be eaten?

Shi Cong: This is not the case. In fact, there is no problem choosing a regular source to meet the relevant testing standards. Some netizens believe that "iodine can resist radiation", so it accumulates iodized salt or abandons iodized salt and eats iodized salt. These methods are not desirable.

It is not possible to prevent nuclear radiation by eating iodized salt alone. The upper limit of iodized salt is 30mg/kg, while the iodine tablets are about 100mg per tablet per piece. Clinically, taking iodine tablets can reduce the dose of thyroid absorption 131i, but the effect is limited and cannot prevent other nuclein radiation other than 131i.

WHO recommends that adults take about 150-300 μg per day, and it has always been necessary to eat an appropriate amount of iodized salt. Because iodine deficiency will not only cause iodine deficiency such as thyroidist glandular, cluting diseases, but also have a certain relationship with the development of thyroid cancer. However, some special groups such as hyperthyroidism and people who need to be treated with 131i should eat low iodine diets such as iodized salt to limit the high intake of iodine.

Netease Health: In addition to the dining table, many people care about nuclear radiation what damage does the human body cause? Which human organs and cells are easily affected?

Qiu Liheng: The degree of nuclear radiation to human damage depends on the intensity of nucleo radiation and the time exposed to radiation. Accepting radiation above 4000 MSV in the short term can cause nervous system damage and rapid death. A radiation of 2000-4000MSV will cause ray disease. These do not need to worry too much in daily life during major nuclear accidents or nuclear wars.

The human body crystals, thyroid, gland, hematopoietic system and other sensitive nuclear radiation. There is an old saying in the nuclear medical circle: the disconnection of the dosage of the nuclear is that radiation is a hooligan, so there is no need to talk about nuclear changes, excessive panic.

NetEase Health: So how should we prevent the effect of nuclear waste water on the body?

Lu Keyi: Japan's discharge nuclear waste water is different in the past. The harm is that there is no precedent, and the volume is huge and cannot be predicted. What ordinary people can do is to believe in the party and the government, listen to the party's command, and do not rumors and rumors.

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