Because babies drink less than adults. The lifetime average water consumption of people who die as infants is tiny compared to the lifetime average of adults.
Oops—sign mix-up in my mind when I wrote this. I meant the opposite—that I guessed that water consumption rate is negatively correlated with mortality rate.
Correlate water consumption rate with lifespan, to get a correlation. My guess is it will be negative.
Why? (EDIT: I guess people in warmer countries tend to drink more water but to have worse health; is that what you’re thinking about?)
Because babies drink less than adults. The lifetime average water consumption of people who die as infants is tiny compared to the lifetime average of adults.
In other words, death prevents drinking water.
Oops—sign mix-up in my mind when I wrote this. I meant the opposite—that I guessed that water consumption rate is negatively correlated with mortality rate.