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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
Blood is approximately twice as thick as water because of the cells and other components found in it.
Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.