Pulitzer Prize-nominated author Meryle Secrest makes the claim in the upcoming biography, 'Princess Margaret and the Curse'

Citing the research of Dr. Kenneth Jones, one of the two doctors who identified term fetal alcohol syndrome in 1973, Secrest writes that Margaret "had a poor awareness of physical danger" and struggled with impulse control, as many with the condition can do, and would "blurt out the truth."

A new biography claims that Princess Margaret may have suffered from foetal alcohol syndrome caused by the Queen Mother’s drinking. The syndrome, which results from a baby’s exposure to alcohol in the womb,

There is no evidence that Queen Elizabeth—born in 1926—also had this condition. A new biography written about the late Princess Margaret, the younger sister of Queen Elizabeth, claims that the royal was left with fetal alcohol syndrome from the Queen Mother’s drinking during pregnancy.