Not speculation. Based on fairly recent studies.
Regarding suicide:
In an academic article two years ago, Taiwanese researchers showed a direct link between unemployment and suicide, a link that can linger for up to three years after unemployment has already retreated. Even a brief recession has lasting consequences. In rough terms, each 1 percent rise in unemployment leads to one additional suicide for each 100,000 people. If unemployment increases by 5 percent in the current economic shutdown, that could mean some 16,500 additional suicides. A 10 percent spike in unemployment could mean some 30,000 additional suicides.
https://thehill.com/opinion/finance/489 ... our-health
Regarding heart attacks:
Among Americans between the ages of 50 and 75, a study in the Archives of Internal Medicine found the unemployed are 35 percent more likely to suffer a heart attack.
So time to do some math here. Per the CDC in 2019, 805,000 Americans have a heart attack every year. 94 million people are aged 50-75, and while exact numbers are hard to come by, it looks like roughly 45% of all heart attacks are people in this age group, or roughly 362,000.
So let's apply these numbers to the Internal Medicine study. For every 1% increase in the unemployment rate, 1250 more people in the 50-75 age group will have a heart attack within 1 year.
So just looking at heart attacks and suicides, a 5% increase in unemployment means 16,500 more suicides and 6,250 more heart attacks annually. Worth noting, however, is that while I can't find the entire Taiwanese study without paying for it, the abstract indicates that the suicide rates are somewhat mitigated by government welfare. Meaning, the stimulus package that was just passed will actually reduce suicide rates.