Background:
The study, led by the University of Michigan in the United States, reviewed the genetic and health information of more than 276,000 people.
The findings were published in the latest issue of the journal Science Advances.
The study found that:
Having fewer or more children shortens lifespan.
Women who have two children live longer than women who have one or more children.
Women who have two children live an average of 1 more than women who have one5 years, 2 years longer than women who have had more than three children2 years.
Study Explained:
Researchers believe that fertility and longevity are strongly negatively correlated genetically, meaning that mutations in genes that promote reproduction tend to shorten longevity.
Having a child can place a certain burden on a woman's body, which may shorten the life expectancy.
Having too many children increases a woman's risk of certain diseases, such as breast and ovarian cancer, which may also shorten lifespan.
Notes:
The study only found a correlation between the number of births and longevity, and does not mean that having two children guarantees longevity.
The number of births is just one of the many factors that affect longevity, other factors include genetics, lifestyle, environment, etc.
The results of this study are mainly for women, and the relationship between the number of births and life expectancy in men needs to be further studied.
Recommendations:
When deciding how many children a woman should have, she should consider her own physical condition, family environment and other factors.
Women should pay attention to maintaining a healthy lifestyle, such as eating a balanced diet, exercising regularly, quitting smoking and limiting alcohol.
Women should have regular physical examinations to detect diseases early.
The study also found that the age at which a woman gives birth also affects her lifespan. Women who give birth later tend to live longer than women who give birth early.
Researchers believe that the best age for women to have children is between the ages of 25 and 35.
Women should take a break after giving birth and avoid overexertion.
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