Do strawberries cause child sexual precociousness?

Original title: Will strawberries cause children to have sexual precociousness?
Spring is a large number of strawberries on the market season, can face the market shape of different and delicate strawberries, many consumers, especially mothers can not stop wondering: heard that the process of growing strawberries will be used hormones, will cause children to precocious, then this strawberry can not eat in the end? This article solves your doubts.
plant hormones can not act on the human body
the first thing to popularize is the concept of the problem. Plant hormones are active substances produced by plant cells that regulate plant physiological reactions at low concentrations. They participate in physiological activities such as cell division and elongation, tissue and organ differentiation, flowering and strength, maturation and aging, sleep and germination, and regulate plant growth, development and differentiation. In the process of crop cultivation, the so-called hormones used by farmers are actually plant growth regulators. They are similar to plant hormones and are synthetic chemicals that regulate plant growth and development. Common plant growth regulators are erythromycin 920, ethylene and other dozens of species. These plant growth regulators have different regulatory functions, some can delay the ripening of the fruit, some can improve the sugar content of the fruit, and some can promote the formation of buds and thus promote the ripening of the fruit. The process spans nearly a hundred years, from scientists' discovery that plants naturally produce plant growth hormone to synthetic plant growth regulators and widespread use in agriculture. In many literatures, plant hormones and plant growth regulators are common names.
According to China's Pesticide Management Regulations, plant growth regulators belong to the scope of pesticide management, the implementation of pesticide registration management system in accordance with the law, where the production, sale and use of plant growth regulators in China, must be registered pesticides, and drug physio, toxicology, residues and environmental impact of a number of use effects and safety tests. In particular, in toxicology tests, the application for registration of products of acute, chronic, sub-chronic and teratogenic, mutation-related toxicology, such as comprehensive testing, after the National Pesticide Registration and Evaluation Committee to review and approve, before allowing registration.
need to be clear that plant hormones and animal hormones are two different hormones, and some reports have deliberately or unintentionally confused the two. The role of hormones in living organisms is conditional: a specific, corresponding protein (i.e. hormone-like body) must be present in the hormone-acting cells to be combined with them. The physiological metabolic regulation mechanism of human and plant is quite different. There are no plant hormones in human cells, plant hormones on the human body is not likely to play a regulatory role, therefore, consumers are worried about the intake of plant hormones caused by "sexual precocious" "fat" "endocrine disorders" and so on, in fact, it is impossible to happen. Similarly, animal hormones do not work with plant cells and cannot be used in fruit and vegetable production. Taking ethylene, a well-cooked plant growth regulator, as an example, which is commonly used in animals, such as estrogen, progesterone, testosterone and other sex hormones, both chemical structure and the subject matter are different.
the dose is left in the safe range
objectively speaking, "dosage toxicity aside" is unscientific and irrational. Under normal circumstances, plant growth regulators are used during plant growth, and the residual dose in fruits and vegetables is safe for the human body. It is not possible for farmers to overuse plant growth regulators, because plant growth regulators are characterized by a small amount of application can play a corresponding effect, such as excessive application is not conducive to crop growth.
such as growth hormone, when the concentration is controlled at 80 ppm to 100 ppm (one millionth of a concentration), can promote the growth of cucumbers, but when the concentration exceeds 100 ppm, its growth-promoting effect disappears. For example, 2,4-D is a representative synthetic plant growth hormone, low toxicity, in the domestic eggplant fruit vegetables and watermelon, lychee, citrus and other melon fruits are widely used to preserve flowers and fruits. However, 2,4-D has the effect of a growth regulator when used at low concentrations, which is equivalent to a herbicide when used at high concentrations. Strawberries are herbs and are very sensitive to herbicides, and excessive use of herbicides can cause harm to strawberry seedlings, while the use of herbicides during the strawberry's outcome period has no effect. For example, the puffing agent, which has a contributing and long-term effect on watermelons, was first developed by Japan in the 1980s and introduced to China. Over-use of puffing agents can even cause cracks in watermelons, so farmers do not use puffing agents in large doses. On the other way, in order to achieve the desired puffing and weight gain effect, farmers will strictly control the use of these growth regulators. At the same time, the growth regulators absorbed by plants are metabolized by the plant body, and the amount that actually enters the body is even less.
also need to be noted that the effect of plant growth regulators is limited. Some studies show that the plant growth regulator applied to cucumbers, tomatoes, strawberries, grapes, poplars and other crops of melon fruit, after use, the average increase in the weight of single melon fruit less than 30%, it is impossible to achieve the legendary super-large effect, fruit and vegetable market "oversized" products are many cases through variety selection to achieve.
some agencies, without any testing or investigation, have falsely stated that child sexual precociousness is caused by eating strawberries, and some media have reprinted these pseudo-scientific and fake news without verification. This practice is extremely unseable to consumers as well as to Our agriculture and food industries.
extended reading
. Is milk strawberry really watered out of milk?
't, of course, it's just a gimmick in business marketing. Milk will be corrupted and badened under the action of microorganisms in the soil, soil plate, seriously affecting the normal growth of plants.
2. Big strawberries or hollow strawberries, are they all urged by plant growth regulators?
it has to do with strawberry varieties. Strawberry varieties as many as 40 kinds, some of them, such as sweet Charlie, Dukla, Dashanka, its fruit characteristics are hollow.
3. Why are strawberries getting lighter and lighter?
it's still about strawberry varieties. In addition, in order to meet the needs of long-distance transportation, when strawberries are not fully ripe to pick, will also affect the accumulation of aroma in strawberry fruit. Fruit good flavor and storage, transport resistance can not be both, people must make a choice. (Xi Wei)