Individual behavior basically includes what kind of job you're working, because that definitely impacts much of those other behaviors like sleep and quality of food.
"work conditions" is in social circumstances
Is joining a union an individual action or a social circumstance?
I guess my point is that environment (social circumstance) and individual behavior is a gradient. Drawing a clear line between the two so that "individual behavior" is the largest share might actually be unhealthy framing as it takes out of focus how an individual might improve their circumstances.
A LOT of the deaths in the category of "individual behaviour" are just diseases of poverty and/or society. Like come on, depression, drug & alcohol use, and road deaths are not even close to entirely individual.
Your comment sent me on a quick exploration. I was not sure how strong the connection between depression and poverty was.
Here's what I thought before checking the evidence: on the one hand, poverty is associated with constant stress of all kinds, from material considerations to social stigma. On the other hand, wealthier people and societies lose their vertical social capital, which on its own could lead to loneliness. Additionally, wealthier people and societies can undergo radical changes of any kind (changes that are arguably more drastic than changes that poor people and societies undergo, simply because of the expansion of capabilities associated with wealth), and that could lead to the anomie that Émile Durkheim described in the 19th century.
Turns out, inequality is shit for mental health https://pmc.ncbi.nlm.nih.gov/articles/PMC5775138/ https://pmc.ncbi.nlm.nih.gov/articles/PMC9140340/#%3A~%3Atext=Depression+prevalence%2Cthese+associations.&text=In+comparison%2Ctimes%2C+respectively.&text=About+35%25%2Clow-PIR+have
Good on you to research. The more one realises how much wealth disparity negatively affects everything, the more one realises how much we need to change.
