I am trying to remember how high health pools in legion 7.3 got, I knew damage numbers got REALLY insane by the end of legion, but I can’t remember if health pools were also really insanely high. If someone remembers give me an example of how high health got.
This is probaly a pretty silly topic to come across.
Looking at a +30 key Youtube video of a Prot Pally he had 12.1 million health.
I have a video saved when the servers went down so I could see the final AP number. I’d have to check my PC tomorrow for that and see the health bar.
Someone made this a few years ago. Can’t verify how accurate it is. Says it’s warrior tank hp through the years.
Well I will say this right now in blood I have 858k hp, that is close to what I had in MoP which was 1m. We have just hit those same pools that were in MoP. Maybe next expansion things will get nuts again.
At a low ilvl of 943, 10 days before 9.0.1, I had 5.488 million as ret:
and, 7 days post squish I had 26k as ret:
Of the screenshots I have around that time, this tank in a +0 mythic seems to be the highest that encountered at 14 million:
Just some examples mainly because I saw that I had long ago 
'd the OP in the older thread Duffle linked from 3 years. 
Somehow, despite the laughably bloated health/damage numbers it didn’t really affect my enjoyment of the expansion
I suppose good/polish™-ed content trumps all other minor blemishes 