Pregnancy refers to gestation, and smoking and drinking can often affect pregnancy. The harmful substances in cigarettes and the ingredients in alcohol may enter the body and reduce the oxygen content in the body, affecting the normal development of the fetus. Cigarettes contain harmful substances such as nicotine and tar, while alcohol contains alcohol and other substances. For women who smoke and drink heavily for a long time, it may affect the health of the ovaries and affect the development of eggs, which will affect normal pregnancy. For women who are already pregnant and smoke or drink, the harmful substances in tobacco and alcohol may enter the placenta, leading to abnormal contraction of the endometrium and a significant decrease in oxygen content in the body, which may cause threatened abortion or abnormal fetal development. For women who want to prepare for pregnancy or are already pregnant, there are many precautions in life. They should stay away from harmful pollution environments, and avoid smoking, drinking, and abusing drugs to avoid affecting their own health and the health of the fetus.
