Endocrine Disruptors Report

and fallopian tubes. Estrogen also stimulates the growth of the external female genitalia and breasts. Fat distribution in the female is also controlled by estrogen. The non-reproductive functions of estrogen include reduction of LDL (bad cholesterol) and an increase in HDL (good cholesterol). Estrogen also preserves bone strength by slowing down cells involved in bone break down. Estrogen concentrations in the body decrease post menopause which is why women suffer from osteoporosis later in life (Parl, 2000). Estrogen utilizes a positive feedback loop by increasing the production of gonadotropin releasing hormone in the hypothalamus which then increases the release of FSH and lutenizing hormone. This increase in FSH and LH prepare the uterus

In this experiment, contractions of the earthworm gut are measured in an organ bath with a force transducer. The effect of neurotransmitters and ionic concentrations on contraction strength and rate will be investigated.

Also depicted in this paper is the type of cancers caused by each chemical and other related health problems associated with each chemical. Finally, the role of government agencies such as FDA, EPA and OSHA in preventing excessive amount or zero amounts of toxic chemicals from entering the environment will be discussed. The last paragraphs will enumerate the inferred conclusion from my research on Agent Orange, DDT and Benzene.

There are three main mechanisms by which the chemical composition of groundwater, which is our natural source of drinking water, may be changed: by natural processes, by man's waste-disposal practices such as those for sanitary wastes, liquid industrial wastes, solid wastes, and radioactive wastes, and by spills, leaks, and agricultural activities and other sources unrelated to disposal. The degree of risk posed by contaminants varies according to many factors. These include the volume and toxicity of the contaminant, its concentration in the aquifer, its persistence in the environment, and the degree of human and environmental exposure to the contaminant. In addition, the number of persons affected, or likely to be affected, over time and the percentage of available groundwater both locally and regionally should be taken into consideration. If the contaminants in the groundwater exceed the standards set for drinking water by the federal government, for example, then the water is hazardous for the use for which it was designated under the standards. These standards include, however, only a limited number of chemicals, and thus they do not necessarily protect humans or the environment against either the short-term or the long-term effects of every contaminant that might be found in

With all the contaminations of our drinking water people are greatly affected on a daily basis. People expose to a lot of diseases such as cholera, stomach viruses and this severe cases this can even lead to death. The death rates in developing counties are at its highest right now. Human are not only the ones affected animals also suffer the consequences of our ignorance example a herbicide call Atrazina which is use to kill weeds is said to be found most in or drinking water, streams and rivers is said to be responsible for the low sperm count in animals, such as fish and frogs, often times become cross gender and in most cases may result into death. Studies have also

*Endocrine glands produce – hormones, they work with other hormones to perform many functions including: control water & electrolyte balance, regulating carbohydrate metabolism, working as neurotransmitters, maintaining stress & inflammation, regulate reproductive functions

Chemicals harm the growth of plants and animals, chemicals can lead animals to death. Many of the water animals

The decisions that Gina McCarthy, the Administrator of the U.S. Environmental Protection Agency, makes have a direct impact on the health of the nation. Gina and her agency ensure the safety and cleanliness of the environment through standard setting, monitoring levels of chemicals and pollutants, and making sure these standards are enforced throughout all levels of industry. One group of industrial chemicals that have been receiving attention recently are the environmental endocrine disrupters (EED), such as DDT and Bispehnol A, that can be found in a wide range of products that Americans use in their everyday life. From household cleaners, food and beverage containers, beauty products, and even children’s toys, these chemicals are widely

The Great Lakes, though fairly clean, are contaminated with some deadly chemicals that have slipped by human filtration into the lakes. These emerging chemicals have been determined to pose some health risk to humans and surrounding ecosystems and are used by society, but are unregulated or inadequately regulated retardants (Miller-Branovacki, Lindsay, "Water Resources and Urban Waste Water (Week #8)"). More specifically an emerging contaminant is one which is not historically widely distributed, nor a concern, however are now persistent and bioaccumulative making them a concern for the environment. The three major categories for emerging contaminants are; endocrine disrupting compounds (EDCs), Pharmaceutical and personal care

The chemical pesticides used in farming affect the quality of water because of run off which then go into lakes or rivers. In chapter four, Carson concentrates on the water pollution caused by pesticides. The pollution can be unsafe for use and causes fish to die. An example used is a study done by the United States Fish and Wildlife Service in 1960 that showed that “our waters have become almost universally contaminated with insecticides.” (pg.41) The pesticides are especially threatening to groundwater which is an important source of drinking water for humans. Consequently, the chemicals in pesticides can cause cancer and other harm effects on our health. Another issue is that the pesticides in water and can mix with other chemicals and become a new chemical. Therefore, it can lead to the creation of an unknown chemical with harmful

My mother always told me that BPA was a bad substance. She was a nurse who worked in the medical field for forty years, and was always scrutinizing medicines, vaccines, and chemicals. Every school year when I picked out a plastic water bottle, she had to check it to make sure it was BPA-free. Like with anti-depressants, my mother was afraid it would mess with my hormones, especially since I was just a developing girl.

The endocrine system is a group of glands distributed throughout the human body. This group of glands secretes substances called hormones. These hormones are dumping into the bloodstream (Shier, Butler & Lewis, 2009). The endocrine system does not have a single anatomic location. It is dispersed throughout the human body. The final purpose of this process is to control, regulate, and coordinate the functioning of the human body. Some body functions can be activated or inhibited by hormones, which are secreted in very small quantities. The hormone related diseases may be due to hyper secretion, or a hypo secretion. The hormones secreted by the endocrine glands regulate growth, development and function of many tissues, and coordinate the

Most individuals are not aware of the things that are bad for the body until a noticeable reaction occurs. With this in mind, endocrine disrupting chemicals are chemicals that interfere with our endocrine system causing a problem. Therefore, in this paper, I plan to inform you about three endocrine disruptors that are bad for the human body known as flame retardants, phytoestrogens and triclosan. I will contain information about the chemicals found, products that they are located in and the effect they have on animal and human tissue. Next, I will show a relationship between endocrinology and endocrine disrupting chemicals on affecting homeostasis and discuss my reaction to the information I learned and how I feel about it overall.

During recent years, numerous newspaper and magazine articles have suggested that humans may be at risk because small amounts of well known environmental contaminants, such as dioxin, PCBs and DDT, can affect hormone levels. Hormones are produced by the endocrine system as regulators of biological function in target organs. Because hormones play a critical role in early development, toxicological effects on the endocrine system often have an impact on the reproductive system. The term endocrine disruptor is used to describe chemicals that can mimic hormones and may either enhance or counteract their effects. It has been suggested that these hormone changes can, in turn, lead to a variety of health problems

Although the state of America’s water infrastructure is of great concern, the types of chemicals found in America’s tap water are equally as frightening. The passage of the Water Act in 1972 prevents the direct dumping of hazardous chemicals directly into waterways, and helps regulate quality standards of water. However, the Clean Water Act is has no jurisdiction on regulating indirect dumping of chemicals that integrates into water supplies. Pesticides and prescription drugs are the greatest cause for concern of indirect containments in America’s water supply (Olsen). An abundance of the harmful chemicals found in liquefied animals feces, used in large dairy states, have percolated into drinking wells that have caused serious infections (Duhigg). However, more harmful containments are infiltrating water supplies. Such containments include