[dgudkov]

That's a good question. I don't think anyone has a good understanding of the causes of low fertility rates in Canada and in other developed countries. I personally think economics certainly play a role here, especially in high COL cities. However, there are undoubtedly other factors that affect fertility (e.g. health issues, family getting out of fashion in general) and it's hard to say if any of the factors defines the trend alone, or it's a combination of them that pushed the fertility rate down.

[softjobs]

I wonder if their diet affects this somehow, see for example https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8990249/ which discusses endocrine disruptors and fertility, among other things.

There is much we don't know about the long-term impact of some of these types of chemicals people ingest nowadays as part of their diet.