Full Fact is very helpful.
I was listening to a podcast which said around 40,000 EU citizens working as NHS staff had left since the Brexit vote and we're facing a huge shortfall.
It's a bit more nuanced than that reading the Full Fact page on it: https://fullfact.org/health/eu-staff-nhs-what-has-happened-referendum/
Can't get quite so up in arms then. Bit boring checking facts all the time. I like social health care and I like Europeans though, don't need no numbers for that.