Fetal Alcohol Spectrum Disorders. Fetal alcohol spectrum disorders (FASD) are a group of conditions that can occur in an individual whose mother consumed alcohol during pregnancy. Fetal alcohol syndrome is the most serious type of FASD. How much alcohol can a woman consume during pregnancy without harming the fetus? Does the effect of alcohol vary at different times throughout the pregnancy? If a friend of yours was pregnant, and asked you if it was okay if they drank one glass of wine on a special occasion, what would you tell them