Influence of smoking on intelligence development of test tube infants
With the progress of modern medical technology, IVF technology has been accepted by more and more couples. However, some studies have shown that smoking may have a negative impact on the intellectual development of IVF. This article will elaborate on this issue from many aspects.

Pregnant women smoking and IVF intelligence
First of all, smoking in pregnant women will lead to fetal exposure to nicotine and other harmful substances. Several studies have shown that nicotine has adverse effects on the neural development of the fetus. Nicotine will interfere with the release of neurotransmitters and synaptic transmission in the fetal brain, thus affecting intellectual development. In addition, smoking can also lead to fetal hypoxia, further damaging its brain development. A study by the University of California, San Francisco, found that there was a close relationship between mothers' smoking during pregnancy and children's IQ decline.
Secondly, smoking will affect the blood circulation and oxygen supply of pregnant women. The harmful chemicals in tobacco can cause the mother's blood vessels to contract, reducing the fetus's access to sufficient oxygen and nutrients. The fetus has a very high demand for oxygen and nutrients during its growth and development, and the lack of these substances will directly affect the development of its brain. A study by the Free University Hospital in Brussels found that test tube babies born to pregnant women who smoke generally scored lower in intelligence tests.
In addition, smoking will increase the risk of pregnancy induced hypertension and diabetes. These pregnancy complications will affect the normal development of the fetus, including brain development. Pregnancy induced hypertension and diabetes may lead to low birth weight, and low birth weight babies often have poor intellectual development. A study by Arizona State University Medical Center in the United States found that there were significant differences in the intellectual development of test tube babies born to smoking pregnant women, especially for low birth weight babies.
Family Environment and IVF Intelligence
In addition to pregnant women smoking, family environment is also one of the important factors that affect the intelligence of IVF. Family members who smoke will release harmful chemicals in second-hand smoke, and children's long-term exposure to second-hand smoke will increase their intellectual development risk. A study by Harvard Medical School found that the IQ of test tube babies exposed to second-hand smoke in the family was 10 points lower than that of normal family environment on average.
In addition, the family education environment also has an important impact on the intellectual development of IVF. Factors such as family economic status, parents' education level and attention level will directly affect the intellectual development of IVF. A study by the University of Utah Medical Center pointed out that smoking families tend to have low educational level and poor family environment, which will have a negative impact on the IQ of IVF.
Other factors influencing the intellectual development of test tube infants
In addition to pregnant women smoking and family environment, IVF intelligence development is also affected by other factors. For example, preterm birth and low birth weight are often associated with intellectual development problems. The brain development of premature infants and low birth weight infants may be lagging behind, which requires more attention and support. In addition, children's nutritional status and genetic genes will also have an impact on intellectual development.
summary
To sum up, smoking has a negative impact on the intellectual development of IVF. Pregnant women smoking will cause the fetus to be exposed to harmful substances, affecting the neural development and oxygen supply of its brain. Second hand smoke in the family environment and the family education environment will also have an important impact on the intellectual development of IVF. In addition, other factors such as premature delivery, low birth weight, nutritional status and genetic factors will also affect the intellectual development of IVF. Therefore, when paying attention to the intellectual development of IVF, smoking should be resolutely eliminated. It is equally important to establish a good family environment and provide adequate attention and support.