Anxiety and depression tend to work independantly of alchol and substance abuse whilst one can exacerbate the other. This can work both ways around with the latter certainly increasing anxiety and depression.
It's important to say that lockdowns during and the pandemic in general have
not reportedly increased suicide numbers, resulting from increased use of medication (or anything else).
There is a distinction in age groups for the prevalance of correlation between prescribed modern anti-depressants and suicide ideation and completed suicides. Not that , dare I say, the average insurance company would care to make it. From the quite sparse research it's seen that there is actually a general reduction in suicide rates in older groups in correlation with prescribed anti-depressants. Conversely, from the few randomised trials carried out, there appears some indication that the reverse can be the case with younger people. It remains though a highly contentious and controversial subject as to the general correlation between increased use of anti-depressants and suicide.
Yes, the insurance companies can descrimate in whatever way they choose it seems. It doesn't mean that science backs their reasons though.
Just for info, Crunchie and thanks for your interesting comments. It's a big big subject and I personally wouldn't want to see people who would benefit from prescribed drugs avoiding them. I'm not pro or anti-medication, just that people make an informed choice about it.
Not a recent study but informative nonetheless.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4034101/