Thyroid replacement hormones usually are well tolerated. Symptoms that occur during treatment are often due to toxic, elevated levels of thyroid hormones and resulting symptoms from hyperthyroidism.
Facts about the New Madrid Seismic Zone. The New Madrid Seismic Zone (NMSZ) is the most active seismic area in the United States east of the Rocky Mountains. The NMSZ is located in southeastern Missouri, northeastern Arkansas, western Tennessee, western Kentucky and southern Illinois.
Seismologists at the United States Geological Survey think they have found evidence that the New Madrid fault line is still very much alive. That is the region in which the earthquake and numerous aftershocks of 1811 to 1812 happened. However in that era, there were not many people living in the area.