![]() My primary research focus is on describing psychiatric and substance use disorders and their trajectories over the life course modeling mechanisms linking exposures across multiple levels, including individual characteristics to environmental exposures, to subsequent psychiatric and substance use outcomes and the effects of interventions on psychiatric and substance use-related morbidity and mortality. My research applies a cells-to-society approach to identify the causes of psychiatric and substance use disorders, with a particular focus on how state and national policy shape the consequences of these disorders. Health and longevity, as well as illness and death, arise from a complex interaction of factors that occur and accumulate across the life course. I use epidemiology to understand the etiology of psychiatric and substance use disorders. The unprecedented rise in suicide deaths and ongoing drug overdose crisis are two key drivers of this disturbing trend. The longterm stagnation in life expectancy culminated in a multiyear absolute decline in life expectancy in the US from 2015-2018. ![]() ![]() In nations that are free of war, famine, and disease outbreak, the increase in life expectancy overtimes has been described as “ so extraordinarily linear that it may be the most remarkable regularity of mass endeavor ever observed.” However, in the 1990s, life expectancy growth in the US was slowing relative to other high income nations and absolute survival rates were declining for socioeconomically disadvantaged White women. The US has become a curious outlier among its peers.
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