It depends on how you look at it.
Drinking water by itself doesn’t make you to lose weight but people who tend to drink more water also tend to be the ones who successfully slim down and/or stay lean.
People who drink water consistently have made a commitment to their health and so by maintaining that habit they are unconsciously telling themselves that they value being healthy. Once their mind accepts this then it wants to be as consistent as possible and so it makes it easier to adopt other healthy behaviors like reducing sugar etc.
Water drinkers are also NOT drinking beverages (or drinking less) that have calories in them like juices, pop and coffee by default so in that way, yes, water does help one lose weight.
One thing that drinking water does is to make sure you’re hydrated enough for proper metabolism, including the breakdown of fat. Granted this isn’t usually a large factor but for those who are constantly dehydrated it certainly helps to make drinking water a priority.
Drinking water throughout the day feels good. Just look at the woman in the picture? If that image doesn’t convince you, I don’t know what will?
Kidding aside, drinking water is healthy and does promote feelings of well-being and that generally makes you want to move, exercise and continue adopting new, healthy habits.
Water may not cause weight loss directly but it does lead you there. It’s far easier to conquer smaller habits like that and then use that momentum to conquer more, until the fat just melts off.
Are you thirsty?