Hacker News Reader

Breathing pure oxygen is also harmful.

Or drinking too much water.

The Adam Ruins Everything segment on this was great, it takes a large deal of water to poison yourself but somehow people manage to do it because of myths about hydration.

Everything is toxic in too large amount.

https://en.wikipedia.org/wiki/The_dose_makes_the_poison

I was recently reading about the blood / kidney salt balance too. Same for pH. Interesting how our body spends time in a balancing act.

Reply on news.ycombinator.com