Is this weight loss theory true?

when you drink a lot of water it actually makes you feel less hungry. you are not exactly putting food in your system so you are not making yourself full you are just making yourself feel full. also, since it only makes you feel full and you are actually not full your get even hungrier then what you felt before you drank the water sorry if this makes no sense.

Yes, you will be less hungry temporarily b'coz water would be quickly send to the bladder and pass out as pee. A better way to cheat hunger is to eat high fiber food (e.g : oat or cruciferious vegetable) food like this clean intestinal tracks and won't make you fat.

Its partially true, because you have water in your stomach you tend to be less hungry. Your body would get used to it though. Just be careful not to drink and eat at the same time because water breaks down the acid in your stomach and you do not digest food as well.

Water is good! Flushes the kidneys and keeps your skin healthy.

Actually there was a study that showed that even controlling for hunger, drinking more water DOES help you lose weight.

your stomach would be full, so you would be less hungry. until you pee