Hi,

Thanks for asking an interesting question. There are not many studies conducted implicating stress vulnerability (Diathesis-stress) model in bipolar disorder. However, I am sharing few studies that I could find. Hope you find it useful.

http://www.hdbp.org/psychiatria_danubina/pdf/dnb_vol22_no2/dnb_vol22_no2_198.pdf

https://www.mentalhelp.net/articles/contemporary-understanding-of-bipolar-disorder-causes-and-outcomes/

I Agree. There aren't many studies, i couldn't find them either. However, there have been plenty conducted on stress and affective disorders in general. Perhaps that is helpful. These studies have also included models of stress-vulnerability to explain their results. 

That's great thanks for your input:)

https://ils.unc.edu/bmh/neoref/nrschizophrenia/jsp/review/tmp/186.pdf

"Objective: The authors investigated the predictive potential of a stress-diathesis model for suicidal behavior based on correlates of past suicidal acts. In this model, suicidal acts are precipitated by stressors such as life events or a major depressive episode in the setting of a propensity for acting on suicidal urges. This diathesis is expressed as the tendency to develop more pessimism in response to a stressor and/or the presence of aggressive/impulsive traits. The predictive potential of the diathesis was tested by determining whether clinical correlates of past suicidal behavior predict suicidal acts during a 2-year follow-up of patients with a major depressive episode."