Recent findings in the relatively new science of epigenetics has begun to shed unexpected light on these disturbing tends, as well as unofficially strengthening the case for both reincarnation and a spiritual component to the pattern. It turns out that the imprinting begins long before birth, even generations before- and is carried and added to by each incident of trauma, experienced by the pregnant great-grandmother of your grandmother- passed along in something that can only be explained as inherited memory. Famine, toxins and plague also have their roles in this; each far-reaching pang etches itself into the record, modifying the actions of genes, and passing on myriads of patterns that reach exponential proportions.