Watch the video in link 3.
The amount of water you drink does have a part to play in how much you eat and what you eat.
You can find almost anybody (scientist) that will say almost anything about just about anything even if it as ridiculous as, a cow really jumped over the moon.
You have to go with the majority when it comes to scientist, not one lone ranger that is trying to come up with a new bright idea.
The majority of scientist will tell you more water is better, that is of course to an extent.
#1. https://authoritynutrition.com/7-health-benefits-of-water/
#2.https://greatist.com/health/health-benefits-water
#3. http://www.webmd.com/diet/features/6-reasons-to-drink-water#1
First link is a dubious "health" site not a link to scientific reference.
Second link is about dehydration, need for hydration and effects/benefits of water on human body. The studies provided there relate to these facts. Drinking too little water is as bad as too much. also pointing out some obvious facts that when you endure athletic performance you p[erspire more so you need to replenish with water accordingly.
There is mentioned about drinking half a litre of water before certain activities like eating etc. With relevant studies provided to support that.
Sadly, they also repeat the myth of drinking 2 litres of water a day but bring absolute no single study to support that claim. This whole article although brings up interesting information, in no way debunks my article that 2 litres of water idea is an arbitrary myth.
My article is not about how much and what you eat because of drinking water but about myth of "2 litre of water a day" advise.