Restrictions on Pregnancy Opportunities by Male Elderly Childbearing
Male elder childbearing refers to that men participate in childbearing activities in a higher age range. Compared with women, men have relatively few physiological restrictions on childbearing. However, there are still some restrictions that affect the chance of pregnancy for men's elderly childbearing. The following will elaborate on the restrictions on male elderly childbearing from four aspects: physical health, quality of spermatogenesis, sexual function and genetic risk.

1、 Physical health restrictions
With the growth of age, there may be some problems in men's physical health, which will directly affect the chance of pregnancy.
First, many men may suffer from some chronic diseases when they are old, such as hypertension, diabetes, etc. These diseases will reduce men's fertility. For example, hypertension will lead to poor blood circulation, affecting the production and quality of sperm. At the same time, these diseases will also increase the risk of other abnormal sperm production, thereby reducing the chance of pregnancy.
In addition, with the growth of age, the immune system function of men will decline, and they are easy to be infected with bacteria or viruses, leading to genital tract infection. Genital tract infection will affect the production and quality of sperm and reduce the chance of successful pregnancy.
Another factor affecting health is living habits. With the growth of age, some unhealthy living habits may have a negative impact on male fertility, such as smoking, drinking and bad eating habits. These habits will reduce the quality of spermatogenesis, thus affecting the chance of pregnancy.
2、 Spermatogenic quality limitation
The elderly male fertility will lead to a decline in the quality of spermatogenesis, thereby limiting the chance of pregnancy.
With the increase of age, there will be some changes in the quality of male sperm. Studies have shown that the proportion of the number, vitality and morphology of the sperm of the elderly men will be reduced. This means that the sperm quality of older men will decline, and the chance of pregnancy will also be reduced accordingly.
In addition, the elderly male fertility will also cause abnormal changes in genetic material, such as sperm chromosome abnormalities. The abnormality of these genetic materials is often related to the advanced age of men, which will increase the risk of abnormal embryo formation and reduce the chance of pregnancy.
To sum up, the old age of men will lead to a decline in the quality of spermatogenesis, thus limiting the chance of pregnancy.
3、 Sexual function limitation
Sexual function is another limiting factor for male fertility at an advanced age.
With the growth of age, there may be some problems with male sexual function. Research shows that the proportion of men suffering from erectile dysfunction gradually increases with age. Erectile dysfunction will lead to difficulty in sexual intercourse, which will reduce the chance of pregnancy.
In addition, older men may have decreased libido, which will also reduce the frequency of sexual behavior, thus further affecting the chance of pregnancy.
4、 Genetic risk limits
There is a close relationship between the elderly male fertility and genetic risk.
As men grow older, the incidence of chromosomal abnormalities in sperm will increase significantly, which will increase the risk of children suffering from chromosomal abnormalities. For example, the risk of having children with Down syndrome from older fathers is significantly increased.
In addition to chromosomal abnormalities, older men also increase the risk of children suffering from genetic diseases. Some genetic diseases may be caused by the father's gene mutation, and the risk of these gene mutations increases with age.
Summary
The restrictions of male elderly childbearing on pregnancy opportunities are mainly reflected in four aspects: physical health, quality of spermatogenesis, sexual function and genetic risk. With the growth of age, the risk of men suffering from chronic diseases increases, and their physical health may reduce the chance of pregnancy; The decrease of spermatogenic quality will directly affect the quality and quantity of sperm and reduce the chance of pregnancy; Sexual function problems will lead to difficulties in sexual intercourse, further affecting the chance of pregnancy; Older men will increase the risk of their children suffering from chromosomal abnormalities and genetic diseases. Therefore, the restrictions on the elderly male childbearing cannot be ignored. Age is an important fertility factor. For healthy men, the best childbearing age is between 30 and 35 years old.