AGCDEFG wrote:The newest studies show that borderline is indeed part genetic and part environmental .... All mental illness is in some way chemical.
Alphabet, you are overreaching. Researchers have not yet established that all mental illness is caused, in whole or in part, by body chemistry. Indeed, the BPDdemystified website you cite does not actually say that. Instead, it speaks in highly qualified terms such as "seems most likely" and "it appears," because the cause(s) of BPD is not yet known for sure, as I explained above.
Specifically, that website states "It now
seems most likely that both environmental and biological factors, especially genetic ones, place a person at risk for developing the disorder.... It
appears that no single cause, or risk factor, is responsible by itself for causing the disorder [emphasis added]."
Hence, those "newest studies" prove nothing about the role of childhood abuse. The jury is still out as to whether childhood abuse, by itself, is sufficient to cause BPD in a person who is not predisposed (by body chemistry) to mental illness. Finding that some people experienced childhood abuse without developing BPD does not prove that it was an insufficient cause of BPD for others experiencing abuse. Moreover, finding that only 70% of BPDers experienced childhood abuse/abandonment certainly does not prove that such neglect is insufficient to cause BPD.
On the contrary, some of the "newest studies" find that childhood abuse appears to cause the change in body chemistry by causing a change in brain structure. Specifically, they show that the hippocampus and amygdala may be as much as 16% smaller in people with BPD and have suggested that experiences of trauma may lead to these neuro-anatomical changes. That is, these findings "suggest" that childhood abuse not only causes BPD but also the very body chemistry changes that you are claiming to be the cause.
Like the studies you mention, Alphabet, these studies also fail to settle the matter and thus are heavily qualified with terms like "may be" and "suggested." To read more about those brain studies, see
http://borderline-personality.suite101. ... _bpd_brain .