Do not drink any beer, wine, liquor or any other form of alcohol during conception or pregnancy. There is no safe amount of alcohol that you can drink during pregnancy, and when a woman drinks, the alcohol passes from her bloodstream into the fetus.  Prenatal exposure to alcohol can cause fetal alcohol spectrum disorders (FASDs). One of the most severe of these disorders is fetal alcohol syndrome (FAS). FAS is the major known preventable cause of intellectual disability in the United States. Drinking during pregnancy can also lead to a miscarriage and stillbirth. There is no safe amount of smoke that a pregnant woman and baby can be exposed to, so always avoid smoking cigarettes and secondhand smoke during conception and pregnancy. Tobacco intake increases the risk of a premature birth, low birth weight, birth defects such as cleft lip or cleft palate, and death. Women who smoke while pregnant are more likely to have a miscarriage. Smoking has also been linked to Sudden Infant Death Syndrome (SIDS). Particular over-the-counter and prescription drugs, referred to as "teratogens," carry a high risk of causing birth defects. If you are taking medication, speak with your physician before conceiving.  Teratogenic drugs are most dangerous between the first and eighth week of pregnancy, a period when many women may not realize they are pregnant. Thus, it is very important to consult with your doctor if you are taking medication and wish to conceive. There are a number of drugs that fall under the teratogenic category, including some antibiotics, lithium, thyroid and cancer medications, blood-thinners, acne medications, male hormones, anti-epileptic drugs, antidepressants and more. A helpful list and description of high-risk medications can be found here. The consumption of drugs like cocaine, methamphetamine, and heroin can lead to serious complications during and after pregnancy. These and other illicit drugs should be avoided at all costs during conception and pregnancy.  Cocaine, heroin and other illegal drugs...

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Write a summary of the previous text in Chinese:
戒酒。 戒烟。 向医生说明用药情况。 远离或戒除毒品。 避免接触环境中的毒性物质。