Every cell in your body depends on your thyroid gland to function properly. Specifically, your cells use the hormones produced by your thyroid to regulate a range of metabolic processes, together with getting power from the food you eat.
Your thyroid hormones also help regulate your body climatic characteristic and play a role in the proper functioning of your brain, heart, muscles and other organs. When working properly, your pituitary gland will release thyroid-stimulating hormone (Tsh), triggering your thyroid to yield the thyroid hormone thyroxine (T4), which is then converted into triiodothyronine (T3), in the definite amounts your body needs to thrive.
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However, this is a very delicate system, one that is beyond doubt disrupted by surface influences, together with the chemicals that are ubiquitous in our environment. This is one leading factor that is increasingly being associated to disruptions of the thyroid, disruptions that can seriously impact your health.
What Types of Chemicals Can Disrupt Your Thyroid?
There are concerns with regard to numerous chemicals that are currently abundant in the environment.
Nine of the chief offenders include:
1. Phthalates
Phthalates are widely used chemicals often used to make plastic flexible. They're commonly found in shower curtains, curative tubing and plastic toys, as well as in numerous personal care products such as fragrances, nail polish and lotions. Because the chemicals are so widely used, they're also gift in drinking water supplies.
Known to cause reproductive and developmental toxicity in animal studies, phthalates can also impact thyroid regulation by decreasing thyroid hormone receptor activity -- at levels found in drinking water.[1] Currently, drinking water treatments do not effectively take off thyroid-disrupting chemicals like phthalates from your drinking water.
2. Flame Retardants
Polybrominated diphenyl ether (Pbde) are flame retardant chemicals commonly used in furniture foam, carpets, upholstery, clothing, toys, draperies, electronics and more. It's estimated that up to 97 percent of Americans have Pbdes in their blood.
The chemicals beyond doubt get in your fat cells, and increased levels have been associated to a decrease in Tsh levels and an increased risk of subclinical hyperthyroidism in pregnant women.[2]
3. Bisphenol A (Bpa)
Bpa is other plastics chemical commonly used in polycarbonate water bottles, baby bottles, plastic toys, curative tubing, food packaging, dental sealants and more. Widely known as an endocrine disrupter that can cause developmental problems, early puberty, genital deformities and more, Bpa has also been associated to thyroid disruption.
In one study on frog tadpoles, low levels of Bpa exposure -- similar to those found in human infants -- interfered with the T3 hormone and thereby suppressed genes controlled by T3, resulting in slowed development and other changes.[3] previous animal studies have also associated Bpa to disruptions in thyroid receptors and thyroid function.
4. Dioxin
Dioxin is a group of chemicals -- together with polychlorinated biphenyls (Pcbs), polychlorinated dibenzo dioxins (Pcdds), and polychlorinated dibenzo furans (Pcdfs) -- that are formed as byproducts from industrial processes like chlorine paper bleaching, pesticide manufacturing and smelting. Dioxin was also a part of the toxic Agent Orange used during the Vietnam War.
Pcbs, other type of dioxin, were widely used prior to 1977 when they were banned due to environmental concerns. However, they and other dioxins still exist in fullness in the environment, together with in your food (especially meat, dairy and seafood).
Not only is dioxin a known carcinogen, but it also has been found to interfere with the production, transportation, and metabolism of thyroid hormones.[4]
5. Perfluorinated Chemicals (Pfoa)
Pfoa and a associated chemical called Pfos (perfluorooctane sulfonate) -- widely used in nonstick cookware, stain-resistant materials and food packaging -- can also cause issue with your thyroid.
One study found that citizen with high levels of Pfoa in their blood were twice as likely to have thyroid problems as those with the bottom levels[5] while past studies have also associated the chemical to decreased thyroid hormone levels. It's not known how Pfoa may cause thyroid disease, or whether the chemical directly impacts the thyroid or instead the immune system, causing it to strike the thyroid gland.
6. Fluoride
Most municipal drinking water supplies in the United States include added fluoride, a measure that's intended to sell out rates of tooth decay. It can also enter water supplies from fluoride-containing rocks and soils.
Studies have shown that exposure to fluoride can follow in decreased thyroid function, together with at exposure levels of 4 mg/L or less, which is the Epa maximum proper concentration for fluoride in drinking water.[6] The effects may be especially problematic for children and citizen who drink a lot of water.
7. Perchlorate
Perchlorate is a byproduct of rocket fuel output that is now a widespread contaminant in drinking water, safe bet fruits and vegetables and dairy products from cows that eat contaminated grasses.
Research suggests it can inhibit your thyorid's potential to absorb iodine, leading to an underactive thyroid, or hypothyroidism, even at low-level exposure. In a study by the Centers for Disease operate and Prevention, it was estimated that 44 million U.S. Women -- together with those who are pregnant, have lower iodine levels or have subclinical hypothyroidism -- could be at increased risk of thyroid problems from perchlorate exposure.[7]
8. Thiocyanate
Thiocyanate is a chemical found in cigarettes and safe bet foods. It may inhibit iodine uptake by the thyroid, leading to decreased output of thyroid hormone.
9. Pesticides
Thyroid disease has also been associated to pesticide exposure from a range of sources. Among women whose spouses were licensed pesticide applicators that had used organoclorine insecticides, rates of hypothyroidism were 1.2 times higher than in the normal population. Increased rates of thyroid disease were also found among women exposed to fungus killers, herb killers and other types of pesticides.[8]
How to sell out Your Exposure to Thyroid-Disrupting Chemicals
Chemicals are ubiquitous in our environment, but there are steps you can take to help cut back on your exposure. Some of the top suggestions include:
- Use natural personal care products with ingredients you are well-known with. At the very least look for phthalate-free options.
- Buy children's toys made of natural materials, or at least phthalate-free plastic.
- Avoid exposure to old carpet and carpet pads and polyurethane foam products (upholstered furniture, mattresses, pillows) artificial prior to 2005 (these are most likely to include Pbdes).
- Store your food and beverages in glass or ceramic packaging instead of plastic, and do not reheat foods in plastic packaging or covered in plastic wrap.
- Limit your use of canned goods and soda cans (the linings often include Bpa), or look for Bpa-free canned items.
- Trim the fat from your meats to cut back on dioxins stored in animal fats, and pick leaner cuts of meat.
- Avoid polyvinyl chloride (Pvc) plastics, such as plastic milk jugs.
- Look for unbleached sources of household products like coffee filters, tampons, diapers, paper towels, etc.
- Avoid using non-stick cookware, opting for stainless steel, ceramic, or other inert materials instead.
- Install a reverse osmosis water filtration theory in your home to take off fluoride from your drinking water, and think a widespread filter to also take off other chemicals like perchlorate.
- Avoid smoking cigarettes and exposure to second-hand smoke.
- Choose organic foods as much as potential to limit your exposure to pesticides. Also, do not use the chemicals colse to your home (including chemical lice treatments and flea and tick products for pets).
With the evidence increasingly showing that exposure to environmental chemicals, even at low levels, can negatively impact your thyroid, and the knowledge that even small changes in your thyroid homeostasis can work on your health, it's leading to sell out your exposure as much as possible.
By development small changes in your food choices and your personal care products and paying special concentration to seeing household goods made from primarily natural sources, you'll be off to a great start in protecting your thyroid function from these pervasive toxins.
References
1. Environmental Science and Technology 2010, 44 (17), pp 6863-6868
2. Environmental condition Perspectives October 2010, 118(10)
3. Endocrinology Vol. 150, No. 6 2964-2973
4. Alternative rehabilitation delineate 2009 Dec;14(4):326-46
5. Environmental condition Perspectives 118(5) May 2010
6. Committee on Fluoride in Drinking Water, National explore Council, Fluoride in Drinking Water: A Scientific delineate of Epa's Standards, 2006
7. Environmental Working Group News release October 4, 2006
8. American Journal of Epidemiology (2010) 171 (4): 455-464
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