This makes me feel better!
Here's a follow up study which corroborates this data but is more recent; 2014 instead of last century (1999, lol)
https://www.sciencedaily.com/releases/2014/01/140106115351.htm
Reminds me about that fuckin' 8-glasses-of-water bullshit.
I love how half the text in that article is blue.