Many parents want to know what causes deformities of the hands or feet of their babies, and some of them mention the problem of advanced age. It is true that the risk of babies with hand and foot deformities is relatively higher when the mother is older, but it does not necessarily mean that babies born to older mothers will have hand and foot deformities, and mothers who are not too old will definitely not give birth to babies with hand and foot deformities. I have a lot of friends around me who are advanced maternal age, and their babies are very healthy, so we should not be too nervous. The causes of hand-foot deformity in babies are not clear and it is difficult to summarize how to prevent it, but we can try to avoid some susceptible factors. When you are pregnant with your baby, both of you should be in good health, and you can stop smoking, drinking and other bad habits. During pregnancy, it is important to pay attention to the influence of the environment, do not come into contact with suspicious substances, and also pay attention to the influence of medication.