25% of women suffer some form of depression after child birth . From the 'baby blues', to post natal depression (PND), to post natal psychosis (PNP), which can result in infanticide and suicide. Luckily PNP only occurs in % of women. The depression is caused by the rapid drop in progesterone levels after the expulsion of the placenta. Serotonin levels drop too. Anti-depressants are not required, what is are large amounts of progesterone. From 800mg/day for PND up to 2400mg/day for post natal psychosis, the amounts Dr Dalton found effective.
Aside from chemical components which may cause a predisposition to alcohol dependence and blackouts, expectations of alcohol use may predispose drinkers toward alcoholism and blackouts. In a study of 123 college students significant correlations were found between students’ alcohol expectancies, level of alcohol abuse, and blackout history. The students who experienced blackouts (%) had much higher positive alcohol expectancies than those without blackouts. Positive and negative expectancies were positively correlated among the no-blackout group, but negatively correlated among the blackout group.