There is dated data (from 1981) showing a 37,000 increase in deaths for each percentage-point rise in the unemployment rate. It comes from a book called “Corporate Flight: The Causes and Consequences of Economic Dislocation” by Barry Bluestone, Bennett Harrison and Lawrence Baker.
From the article citation below:
> Here’s the paragraph from Thomas’ book that applies: “According to one study [the one by Bluestone et al.] a 1 percent increase in the unemployment rate will be associated with 37,000 deaths [including 20,000 heart attacks], 920 suicides, 650 homicides, 4,000 state mental hospital admissions and 3,300 state prison admissions.”
The data is stale, for sure, but the correlation (economic downturn->increase in deaths) is arguably proven.
https://nypost.com/2020/04/20/explaining-the-link-between-un...
(I was unable to find an online version of the book to link to in Google Books or openlibrary.org; I bought the book used from Amazon, it's headed to the Internet Archive for scanning).