How does alcohol affect a fetus?
Similarly one may ask, how early in pregnancy does alcohol affect the baby?
In the first two weeks following fertilization, excessive alcohol consumption does not generally have a negative effect on the zygote and emerging blastocyst (pre-embryo). It is in the third week after fertilization that specific alcohol-induced birth defects begin to affect the developing embryo.
Keeping this in consideration, what happens if you accidentally drink alcohol while pregnant?
When a woman drinks alcohol while she is pregnant, the alcohol goes to the baby through her bloodstream. Drinking alcohol during pregnancy can cause fetal alcohol syndrome (FAS), a serious condition that can affect a child throughout life.
Risks of Drinking Wine While Pregnant. The reason that no alcohol is considered safe during pregnancy is because of the risk of fetal alcohol syndrome. The alcohol passes through the placenta and into the baby's bloodstream. This can cause many birth defects, from physical abnormalities to mental retardation.