What are the reasons that can lead to fetal malformation

Patient's question:

No

Doctor's answer:

Although there are currently no cases of smoking causing fetal malformations, it is very common to cause low birth weight infants and developmentally delayed infants. Both smoking and passive smoking can affect fetal development, so young couples planning to have babies must quit smoking! At the same time, pregnant women should try to avoid environments contaminated with smoke.
Factor three leading to fetal development malformations: Abuse of drugs