Synthroid is a brand name of the drug levothyroxine, a replacement thyroid hormone used to treat hypothyroidism. If you have low thyroid function, you may experience weight gain, slower heart rate and a sensitivity to cold temperatures as your...
You are endothermic, or warm-blooded; your body's processes, such as metabolism and heart rate, are regulated internally. Exothermic organisms must seek an external heat source to warm themselves. Because you are endothermic, your body's internal...
Hypothyroidism has become a much more common ailment in recent years, particularly in women over 60, according to Dr. Karen J. Carlson in "The New Harvard Guide to Women's Health," published in 2004. The exact reasons why this condition has become...
If you have been diagnosed with heart disease, you may feel intimidated to exercise, especially if you are older and aren't very active. But a sedentary lifestyle probably helped lead to a heart condition in the first place. Modified and moderate...
A human heart beats approximately 45 million times per year, but this can vary based on factors such as age, gender and physical activity level. According to the American Heart Association, a normal heart rate can range between 50 and 100 beats...