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/ 

While there does seem to be a slight trend of EU citizens saying fuck this I’m off, I’m not sure the original figure is something I can legit post angrily about.

Bit boring checking facts all the time.  I like social health care and I like Europeans though, don’t need no numbers for that.