Consider the case of a 1800's patient who undergoes bloodletting, exsanguination is caused by their condition in the same manner that side effects of lock downs are caused by covid.

The real question that needs answering is what the cost of lockdowns was and for that we’d need to compare to suicide statistics for the same period.

Sort of, but the opporunity to fix them would be different.

There's not a whole lot you can do to alter the effect a virus has on a human body (at least not immediately after discovering it), but you might be able to learn a lot from the effects of various types of government intervention, what helped and what hurt, and make plans that reduce the negative effects the next time action is needed.