I'm not sure what you mean. I've been under general anesthesia a few times and not had any negative consequences. My dad has had multiple brain surgeries, and he's fully functional. Most people I know have been under at least once.

I think before you blame anaesthesia it's worth wondering what else happened to you on the table, or whether something else might be causing you the problems. A lot of other things happen during a surgery that can screw you up pretty badly. I'm pretty sure I was dropped off a table once.

I think if there was such a side-effect with such a commonly-used tool, someone would have noticed by now.

Anesthesiologist here: what you are referring to exists, but is rare and is not related to general anesthesia (equally likely in operations performed while patients are awake with regional anesthesia or under general anesthesia). It is more people with pre-existing cognitive dysfunction that are elderly do not handle the inflammatory milieu generated by surgery. You can Google “postoperative cognitive dysfunction” for more information.

Any phenomenon more widespread than the above is simply not supported by scientific studies to date.

I’m honestly a bit disappointed to find this comment on hacker news, as I feel the level of discourse here is usually higher. I wish you all the best and hope you recover from whatever you’re experiencing, but this is frankly fearmongering.

Could you elaborate on specific effects?

Would you be willing to share more details, instead of this rather vague claim? I've had three at least 2 hour long operations last year. I kind of wondered if I'd notice any aftereffects, but apparently didn't. Even waking up was pretty uneventful, consciousness just coming back like a light bulb being turned on again.

So either I am an exception, or your "everyone I know" needs qualification. In any case, I'd be very interested in what aftereffects you noticed, maybe that helps me reflect.

Evidence?

Oh yes, I'm in agreement with you there

Exacerbated by astonishing overuse for anything from a 2-minute endoscopy to a 15-minute hand surgery. The pursuit of “comfort” at the cost of fractional lobotomy.