People's Daily responded to rumors that eating iodized salt will not induce thyroid cancer
China is a country with severe iodine deficiency. Except for high-water iodine areas, the vast majority of residents should eat iodized salt; China has done many monitoring and adjustments. At present, the iodine intake of residents is at an appropriate level, and eating iodized salt will not lead to excess iodine. Recently, some netizens said that the incidence of thyroid cancer in cancer has risen from the 15th to the 5th, mainly due to eating iodized salt; residents of coastal areas of China often eat seafood rich in iodine, not Need to eat iodized salt. Are these rumors true? People’s Daily “certification†columnists interviewed relevant departments and experts. Question one: Iodized salt can easily induce thyroid cancer? ã€response】 Thyroid cancer is associated with heredity, autoimmune and mental factors; the benefits of iodine supplementation are much greater than those caused by iodine excess “The so-called increase in thyroid cancer is related to the excessive salt iodization,†said Xiao Donglou, National Health Surveillance Commissioner for Disease Control and Prevention of the Ministry of Health. “From a global perspective, most tumors including thyroid cancer have been reported in recent years. The reason for the inference that there is some link between thyroid cancer and salt and iodine is not sufficient; on the contrary, the conclusion that taking iodine intervention can transform thyroid cancer into low-grade has been widely recognized.†In view of the "high incidence of thyroid cancer," Wu Yijie, chief physician of the Department of Endocrinology and Metabolism at Shanghai First People's Hospital, frankly admitted that the number of patients suffering from thyroid disease has indeed increased in clinical practice. "But this does not mean that the incidence of thyroid disease increases." According to him, the current medical examination method is more advanced than ever. Puncture techniques can find tumors under 1 cm, but in the past only by hand. "Iodine deficiency or excessive iodine may lead to thyroid disease." Xiao Dong Lou said that excessive iodine can increase the risk of hyperthyroidism, will also make the recessive thyroid autoimmune disease into a dominant disease. Do the iodized salt in daily consumption lead to excess iodine? Dai Weixin, professor of endocrinology at Peking Union Medical College Hospital, said: “In terms of strict definition, the vast majority of people in China should eat iodized salt because iodized salt contains a small amount of iodine, which is a basic amount. There is currently no evidence of excess. Iodized salt is directly related to thyroid disease.†Wu Jiejie said that overall, the iodine intake of our residents is at an appropriate level, but it does not exclude the special circumstances of individual regions. Moreover, human thyroid hormone synthesis is a homeostasis state. Occasionally, it is taken in excess and the human body will naturally excrete without accumulation in the body.
Insect pheromones are compounds used by insects to represent various information such as aggregation, foraging, mating, and alerting. They are the chemical molecular language of insect communication. At present, the basic control measures for pests in agricultural production mainly rely on chemical pesticides, but the long-term uncontrolled use of chemical pesticides has brought many side effects. The first is the emergence of pest resistance, which causes the use of drugs and drug concentrations to increase, the cost increases year by year, and the prevention and control of increasingly difficult; the second is to disrupt the ecological balance, while controlling a large number of natural enemies were killed, causing the pupae of secondary pests; Third, it pollutes the environment. A large amount of pesticides remain in crops, soils, rivers, lakes, and seas, and they are enriched in the human body through the form of food chain, causing another harm to humanity. Therefore, relevant research departments in many countries are currently working hard to explore and study new approaches and technologies for pest control. These studies include: the development of new, efficient, environmentally friendly, low-toxic, low-residue chemical pesticides; natural enemy insects and microorganisms The use of pesticides; insect sterilization technology and the application of insect hormones; among them, the research on the use of insect hormones, especially insect sex pheromones for pest control, is receiving increasing attention and attention.
Research on insect pheromone has been developing rapidly. Since the first insect pheromone Bombykol, has been isolated and identified, more than 2,000 insect pheromones and their analogs have been identified and synthesized worldwide, of which more than 100 insect pheromone To achieve commercial production, the production and research of Lepidoptera sex pheromones is the most extensive and comprehensive.
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