The preparation of human
karyotype for the first time in 1959 led to the identification of numerical aberrations in
the following years associated with Down’s, Turner and Klinefelter syndromes which
implied the need for routine screening for chromosomal anomalies in certain clinical
American men face a staggering array of health concerns. According
to the Centers for Disease Control and Prevention, 70 percent of
American men are overweight, a key predictor of future health problems.
Almost 25 percent smoke, another key risk factor. One in five
American men has heart disease, and 29 percent aged twenty and
older suffer from hypertension. More than 11 percent of men face a
limitation in their usual activities due to chronic health conditions.
In addition, the medical concerns men face often differ from those of
most concern to women.