Bisphenol A Research Paper
Bisphenol A (BPA) is an organic compound that has been used to create certain plastics and epoxy resins. Its transparency, low weight, and resilience to shattering attracted the attention of many plastic and chemical manufacturers. “In 1991, total annual production of BPA was reported by the Federal Drug Administration (FDA) to be about 16 million pounds; by mid-2004 it had risen sharply to 2.3 billion pounds.” (Cooper-Roth) The characteristics of BPA make it an effective component for many different products such as baby bottles and metal cans.
Exposure to bisphenol A is usually thought of as short because it is believed to be rapidly metabolized. However many studies, including one conducted by Richard W. Stahlhut, Wade V. Welshons, and Shanna H. Swan provide evidence that that might not be the case. They investigated the relationship between BPA concentration in a urine sample and fasting. They hypothesized that if BPA was actually metabolized quickly, then fasting would decrease levels of the chemical in somebody´s pee. However, the experiment showed that BPA levels did not drop as quickly as they should …show more content…
In the first month the amniotic sac and placenta develop along with a face, mouth, jaw, and throat. The embryo also develop blood cells and a heart tube. In the second month, ears, fingers, toes, and eyes begin to form. The arms and legs also begin to form during this stage. The nervous system, digestive tract, and sensory organs develop in these first six weeks and bone begins to replace cartilage. During the third month the arms, hands, fingers, feet, and toes are fully developed. The fingernails and toenails develop along with the beginnings of teeth. The fetus is fully formed after the first three months which is the most critical stage of development in a pregnancy. After the first twelve weeks, a chance for miscarriage drops
Exposure to bisphenol A is usually thought of as short because it is believed to be rapidly metabolized. However many studies, including one conducted by Richard W. Stahlhut, Wade V. Welshons, and Shanna H. Swan provide evidence that that might not be the case. They investigated the relationship between BPA concentration in a urine sample and fasting. They hypothesized that if BPA was actually metabolized quickly, then fasting would decrease levels of the chemical in somebody´s pee. However, the experiment showed that BPA levels did not drop as quickly as they should …show more content…
In the first month the amniotic sac and placenta develop along with a face, mouth, jaw, and throat. The embryo also develop blood cells and a heart tube. In the second month, ears, fingers, toes, and eyes begin to form. The arms and legs also begin to form during this stage. The nervous system, digestive tract, and sensory organs develop in these first six weeks and bone begins to replace cartilage. During the third month the arms, hands, fingers, feet, and toes are fully developed. The fingernails and toenails develop along with the beginnings of teeth. The fetus is fully formed after the first three months which is the most critical stage of development in a pregnancy. After the first twelve weeks, a chance for miscarriage drops