No Longer Get Nauseous from Drinking?

Maybe a stupid question…but I’m wondering, is there anyone else who has experienced this same thing?

I used to get all of the standard hangover symptoms drinking in my 20s – particularly, headache, nausea, loss of appetite.

Now I am 30 and, in the last year or so, I have completely stopped getting any hangover symptoms aside from fatigue and brain fog. I no longer experience any loss of appetite, stomach pain, or headache, even when drinking >10 drinks.

This is in spite of the fact that, meanwhile, my health has actually kind of gotten worse from drinking and I am dealing with frequent diarrhea and a stool color change.

It almost makes me afraid that the cause is something sinister, like my nervous system is burning out or something lol.

Can anyone else say that they have lost the ability to get hangovers from heavy drinking?