● toxicant is qualitative

The treatment of stronger radiation, pesticide, benzene, formaldehyde, lead, spray paint, organic dissolvent, batteries, leather, inferior housing materials environment that create is polluted, can affect fetal healthy growth.

● smoking drinks

Smoke: Smoking is met to the development of fetal intelligence, cardiovascular system produce undesirable effect. Prepare pregnant husband and wife, had better be before pregnant 6 months with respect to smoke of Buddhist monastic discipline. Wine: Alcohol can cause fetal alcoholism to be asked for integratedly, the symptom is intellective and small head, low, stunt. Two people of before pregnant 3 months or husband and wife of half an year are about to prepare abstinence.