Were You Born Sad? Can original personality produce chronic sadness? By Eric R. Maisel Ph.D., Psychology Today (How to shed mental health labels and create personal meaning.)
Hereditary trauma: Inheritance of traumas and how they may be mediated: https://www.sciencedaily.com/releases/2014/04/140413135953.htm
Biological mechanism passes on long-term epigenetic ‘memories’:
“According to epigenetics — the study of inheritable changes in gene expression not directly coded in our DNA — our life experiences may be passed on to our children and our children’s children. Studies on survivors of traumatic events have suggested that exposure to stress may indeed have lasting effects on subsequent generations.”- Science Daily (see url’s above).
“Chronic depression is defined as symptoms of major depression that persist for at least two years. There are also two subsets of the disorder: dysthymia, which is defined as symptoms of a lesser severity that last for at least two years; and double depression, which is a combination of major depression and dysthymia… (Chronic) depression is very insidious. People tend to look at these people and say, `Oh, he is so self-centered; he thinks about himself too much.’ Or they might call these people lazy or unambitious. But what it might actually be is chronic depression. Because of this prevailing view, people with chronic depression are not as likely to be diagnosed or seek treatment…”