Both men and women are living longer thesedays in industrialized countries. In general, they can expect to live six or sevenyears more than men. One reason for this is biological.
One important biological factorthat helps women live longer is the difference in hormones between men and women. Between the ages of about 12 and 50, women producehormones that are involved in fertility(生育能力). These hormones also have a positive effect on the heart andblood flow. In fact, women are less likely to have high blood pressure or to diefrom heart attacks.
Theyhelp the body defend itselfagainst some kinds of infections. This means that women generally get sick lessoften and less seriously than men. The common cold is a good example: women, onaverage, get fewer colds than men.
Scientists are still not exactly sure howinfluence aging, but they believe that they do. Some think that a woman's body cellshave a tendency(向) to age more slowlythan a man's. Others think that a man's body cells have a tendency to age more quickly.
A. However, women, on average, live longer.
B.The biological factor plays an important part.
C.Women are also helped by their female genes.
D.The female hormones also protect the body in another way.
E.Recent research seems to support both of these possibilities.
F.Therefore, women are more healthy than men and can live a better life.
G.Hormones are chemicals which are produced by the body to control carious body functions.
