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The aging process (衰老過程)in humans is one which includes all the changes taking place socially,psychologically and physically.Normally,the process of aging in the human body starts at middle age around 45.The process and its effects depend on a lot,so some aspects of the aging process are different from person to person.
Women with a normal aging process often experience some major physical as well as psychological changes.Most women tend to become a little fatter and also get some wrinkles and fine lines as signs of aging.Their skin tends to lose all the natural moisture(水分),becomes dry and starts loosening out.There is also a great decrease in bone mass,body mass and muscle strength,which makes them more likely to suffer from a number of illnesses.The process of aging in women also causes them to lose height because of loss of bone tissue(組織).Hormonal(荷爾蒙的) changes in aging women can bring about a lot of psychological and behavioral changes in them.
Men too,experience a number of changes because of the process of aging,hormonal changes being the most important of all changes.Some changes that may be noticed in aging males include increased forgetfulness,sleeplessness and anger.However,the aging process in men is far simpler than that in women and most men tend to age without facing any major physical aging problems.Aging men tend to face mental problems like dementia and a decrease in the levels of muscle and body mass and bone strength.
The human aging process has a number of effects on the different bodily systems and their functions.As far as the cardiovascular system is concerned,aging results in limited flow of blood in the lungs and also reduces the strength of the heartbeat.The digestive system will find it increasingly difficult to digest and break down food,especially if the food is not chewed properly,which is very common because of poor teeth.The ability or the immune system to produce disease-fighting antibodies(抗體)is greatly reduced,which is what makes people over 45become ill more easily.
Knowing and understanding more about the aging process in humans will enable you to identify many changes that take place when you age.It will also help you lead a happy,healthy and long life.
Title:Aging process in humans
61.social62.different/various/varied63.weight64.height65.cause66.forgetful67.facing/experiencing68.strength69.reduces/weakens/decreases70.Conclusion.