There are 1000s of articles like this and there always was that shows that chronic and or traumatic adverse events cause mental illnesses and that they run in families because  relevant psychological  conditions run in families and gene are and were always only suspected because they run in families. So we keep on ignoring that these are psychological conditions due to inappropriate sensory stimulations and the infant and young children develop all sensory stimulation, the good and bad all in the same way. We need to face up to the reality of the situation.