Some time ago, after watching the film dark waters about Teflon, I learned that the two chemicals used in the production of Teflon, ammonium perfluorooctanoic acid and perfluorooctane sulfonic acid, which are environmental hormones, can play a similar role to estrogen and affect the endocrine level of human body. Moreover, because they will not degrade, even if the production process has changed, their harm to the environment and human body has already occurred and will continue for a long time. Recently, the food packaging paper of McDonald’s and Burger King has also detected fluoride PFAS in the United States, which is also an environmental hormone that is difficult to degrade. Just to make the package waterproof and oil resistant, but also to bear the risk of environmental pollution, I think it is not worth it.
from this I think, in fact, some preservatives, antiperspirants, aerosols, deodorants, breast enhancement ingredients, sunscreen ingredients, plasticizers, non-ionic surfactants and so on in cosmetics are also environmental hormones. Even people generally consider safe plant ingredients aloe (anthraquinones) and pueraria lobata (containing miloxol / deoxy miloxol), and people in perfume. It is also reported that musk has estrogenic activity. < / P > < p > environmental hormones in cosmetics can enter the human body directly through skin contact, and their more important accumulation pathway in the human body is food, water and even air, and the intake of second-hand pathway is much larger than that of primary way. In view of the potential impact of daily chemical products on us, it is necessary to know whether there are pollution problems ignored by the public under the bright appearance of Meiye? Environmental hormones (EDCs), also known as “hormone like” and “endocrine disrupting substances”, refer to substances similar to human hormones in the environment, which will interfere with normal hormone levels after entering the human body, and may have an impact on reproductive system, immune system and nervous system. < p > < p > the most common effect of environmental hormones is estrogenic effect, which not only damages the quality and quantity of male sperm and reduces fertility, but also causes female infertility, breast cancer, and even causes precocious puberty and abnormal development of sexual organs in children. < / P > < p > more than 70 kinds of environmental hormones have been found, including dioxins generated from waste incineration, o-xylates in plasticizers, bisphenol A in plastic milk bottles and shopping receipts. In a joint report released in 2013 by the World Health Organization (who) and the United Nations Environment Program (UNEP), environmental hormone is defined as “a global threat to human health and the environment”.
cosmetics contain environmental hormones mainly from synthetic perfume compounds, such as precursors for the manufacture of flavones, o-benzoic acid two, benzoic acid (also a common preservative), and the aroma substances such as artificial musk, which interfere with the estrogen system. Sometimes, incense is not always good stuff. < / P > < p > take the most common flavor component, artificial musk, for example. The production of artificial musk at first was to reduce the harm to musk deer and played a positive role in wildlife protection. However, with the widespread use of this cheap perfume, the environmental problems caused by it are gradually highlighted.
artificial musk is mainly used in perfume, cosmetics and bath products, such as lipstick, hand cream, shower gel and so on. It will enter the sewage collection system with people’s daily life, because there is no treatment measures for synthetic musk, so it will be directly discharged into rivers and oceans. < p > < p > Artificial Musk can be dissolved in water and has lipophilicity. Although it has a certain degree of degradation, it has been widely enriched in the environment and organisms due to the continuous emission, which can be detected in the fat and liver of marine mammals (such as dolphins, sperm whales, seals, sea lions, etc.), in the liver of birds such as autumn sand duck, great diving duck and wild duck, and in the tissues of fish, shrimp and shellfish There is.
and human consumption of synthetic musk is more than animal, because it will not only penetrate directly through skin and cosmetics, perfume, but also through the food chain to generate biological amplification and accumulation. Of course, the reason why artificial musk can be widely used in daily chemical products is that it has no obvious harm to human body, but shows certain estrogen activity in cell level research, and its harm to mammals is relatively small. However, the harm of artificial musk to aquatic animals should not be ignored. For example, it can reduce the body weight, body length, liver index and gonadal index of female zebrafish, and with the increase of concentration, the spawning ability of zebrafish gradually decreases. Muscone also increased the early mortality of zebrafish embryos and reduced the average survival time. < / P > < p > the risk of environmental pollution by synthetic musk is still controversial, and there is no standard setting for the detection of artificial musk. However, some management measures have been initiated in many countries: < / P > < p > Japan has detected the residual synthetic musk in breast milk and adipose tissue, believing that synthetic musk can disturb endocrine and affect the normal function of biological hormones Some synthetic musk was banned in 1993. < / P > < p > in 1995, musk musk in cosmetics was banned in 1998, and musk xylene and musk ketone were listed as “limited use” in 2008 and banned in 2013. < / P > < p > cinnamate, trimethylcyclohexyl salicylate, 3-benzylidene camphor (3-bc) and P Aminobenzoic acid (PABA), 4-methylbenzylidene camphor (4-mbc), oxybenzophenone and other substances have obvious hormonal interference in animals, which can cause growth inhibition, reproductive inhibition, teratogenesis and death. < / P > < p > even inorganic sunscreens (the main function of inorganic sunscreens is to reflect and scatter ultraviolet radiation, while organic sunscreens play a role of sunscreen by absorbing ultraviolet rays), they are also harmful to marine organisms. Titanium dioxide particles entering seawater can promote the production of hydrogen peroxide under light, and hydrogen peroxide has obvious toxicity to marine organisms (for humans, titanium dioxide powder may cause cancer if inhaled into the respiratory tract). At present, zinc oxide sunscreen is relatively safe and environmentally friendly. However, some studies have found that sea urchin embryos exposed to zinc oxide particles can no longer develop into sea urchin larvae, or appear to develop normally, but eventually die because they can’t eat. < / P > < p > < p > according to a 2015 study published in the Journal of environmental pollution and toxicology, scientists estimate that up to 14000 tons of sunscreen enter the ocean each year. Today, sunscreen can be found in dolphins, fish and bird eggs. < / P > < p > although we talked about the harm of environmental hormones contained in cosmetics, on the whole, cosmetics are still safe and usable, we do not have to stop eating because of choking, after all, the environmental hormones that are definitely harmful to human body have been banned from adding to cosmetics. Moreover, the main way for human body to ingest environmental hormones is through “second-hand” channels such as food and water, and to fundamentally control the environmental emissions, we have to rely on the monitoring and management of the government. However, on the other hand, we are not completely passive. Even if we can’t control the intake of second-hand channels, we can at least reduce the first-hand contact by using less cosmetics to actively reduce its accumulation in the body. < p > < p > < p > the film “black water” reflects a helpless reality: the speed of supervision can never catch up with the innovation speed of chemical products. Therefore, even if cosmetics have regulatory blacklists, short-term toxicological and pathological tests may not be able to avoid all the risks. At present, many substances that have shown hormonal interference (reproductive abnormalities, animal feminization, carcinogenesis and teratogenesis) in animal research are still used in daily chemical industry. Therefore, it is best not to use cosmetics for a long time and a large amount, especially perfume and sunscreen, to control the release of environmental hormones from the source. < / P > < p > cosmetics can also deposit in the house dust, so families with children especially need to clean the indoor environment in time and reduce the use of cosmetics, because children like to climb on the floor and lick things, and are more sensitive to environmental hormones, and their exposure to childhood may affect their life. < / P > < p > cosmetics are chronic contact for a long time. Most women are exposed to at least 100 kinds of cosmetics every day. It is not too much to be careful. Moreover, even if they are harmless to humans, they are not necessarily harmless to nature and other organisms. This epidemic once again reminds us that we should pay attention to the way and degree of taking from the earth. Beauty lies in ourselves, and beauty lies in nature.