Influential factor I: genetic factor
There is a certain relationship between childbearing at the age of 33 and children's intellectual development. One of the important factors is heredity. With the growth of age, the quality of female eggs will gradually decline, and the risk of chromosomal abnormalities or gene mutations may increase. These genetic variations may lead to problems of children's intellectual development, such as mental retardation, learning difficulties, etc. Research shows that children born to pregnant women over 33 years old are at a relatively high risk of congenital mental retardation.

However, not every child over 33 years old has intellectual development problems in childbirth, because heredity is only one of the factors, and there are other factors that will also affect intellectual development.
However, age is not the only determinant, and individual differences may also lead to normal intellectual development of children born by some women over 33 years old. Therefore, we cannot generalize. As long as we pay attention to genetic factors and consult professional doctors in advance, we can reduce the impact of genetic risks on children's intellectual development.
Influencing factor 2: nutrition during pregnancy
In addition to genetic factors, nutrition during pregnancy also has an important impact on children's intellectual development. With the growth of age, the metabolic capacity of women's bodies will decline, and the ability to absorb nutrients may decline. This requires pregnant women over 33 years old to pay special attention to nutrition during pregnancy.
Poor diet habits or malnutrition may cause pregnant women to lack key nutrients, such as protein, folic acid, iron, etc. These nutrients are necessary for children's normal intellectual development. Therefore, pregnant women over 33 years old should ensure adequate nutrition intake under the guidance of doctors to reduce the adverse effects of malnutrition during pregnancy on children's intellectual development.
In addition, proper supplementation of vitamins and minerals, such as vitamin D and calcium, during pregnancy will also help promote the development of the child's nervous system and improve intelligence.
Influencing factor 3: mother's health
Mother's health is also an important factor affecting children's intellectual development. Pregnant women over 33 years of age may face a higher risk of complications during pregnancy, such as hypertension, diabetes, etc. These diseases may lead to the deterioration of the pregnant woman's own physical condition, thus affecting the normal development of the fetus.
Research shows that the intellectual development of children born to pregnant women with hypertension or diabetes during pregnancy may be affected to some extent. Therefore, pregnant women who have given birth at the age of 33 or above should pay attention to maintaining good health, actively control the development of chronic diseases, and reduce the adverse effects on children's intellectual development.
Influencing factor 4: family environment
In addition to heredity, pregnancy nutrition and mother's health, family environment also plays an important role in children's intellectual development. Children born over 33 years old may grow up in the mature stage of the family, with relatively rich economic and social resources. This family environment provides children with good growth conditions, which may be conducive to promoting their intellectual development.
However, there are individual differences in family environment factors. Although the family environment is relatively good, the lack of good family education atmosphere, parents' attention and guidance may still have a negative impact on children's intellectual development.
To sum up, childbirth at the age of 33 may have a certain impact on children's intellectual development. Genetic factors, nutrition during pregnancy, maternal health and family environment are the main influencing factors. Therefore, pregnant women over 33 years old should pay special attention to these factors, actively take measures to reduce the adverse effects, and create better conditions for the healthy intellectual development of children.