" Such experiences can act even on the unborn child. A recent study found that, at one year of age, the infants of women traumatized during their pregnancies by the 9/11 tragedy had abnormal blood levels of the stress hormone, cortisol.2 According to numerous human and animal studies, adverse early experiences may lead to permanent imbalances of essential brain chemicals that modulate mood and behavior. "

― Peter A. Levine , Trauma Through a Child's Eyes: Awakening the Ordinary Miracle of Healing