ABSTRACT
WHY WOMEN LIVE LONGER Despite the overall increase in life expectancy in Britain over the past century, women still live significantly longer than men. In fact, in 1900 men could expect to live to 49 and women to 52, a difference of three years, while now the figures are 74 and 79, which shows that the gap has increased to five years. Various reasons have been suggested for this situation, such as the possibility that men may die earlier because they take more risks. But a team of British scientists have recently found a likely answer in the immune system, which protects the body from diseases. The thymus is the organ which produces the T cells which actually combat illnesses. Although both sexes suffer from deterioration of the thymus as they age, women appear to have more T cells in their bodies than men of the same age. It is this, the scientists believe, that gives women better protection from potentially fatal diseases such as influenza and pneumonia.
