Researchers have found that adults over the age of 40 who have higher levels of bisphenol A (BPA) in their urine tend to be obese, have more abdominal fat, and are insulin resistant. Studies have shown these metabolic disorders can lead to serious health problems such as high blood pressure, diabetes, heart disease, and stroke.(1) (2)
BPA is classified as an endocrine disrupter. Its chemical structure is similar to thyroid and estrogen molecules. This similarity can result in BPA binding to estrogen and/or thyroid hormone receptors. The result of a foreign substance binding to our hormone receptors is that the receptor can be either stimulated or inhibited. Either way, these endocrine disrupting substances wreak havoc with our hormonal system.
BPA is used in the manufacturing of plastics, in epoxy resin linings of food cans and in thermal receipt paper. Furthermore, it has been found in baby bottles and used as part of dental sealant. It can contaminate food and enters the body easily through skin or by ingestion.
Research has shown that BPA in rats can inhibit activation of thyroid hormone. In humans, this problem is known as T3 resistance syndrome. T3 resistance syndrome can lead to all of the signs of hypothyroidism such as weight gain, fatigue, diabetes, heart disease, and stroke.
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