It has not been scientifically substantiated that fluid intake has other benefits besides preventing excessive water loss when the body is not thirsty.
However, according to some studies, the initial prevention of water loss enhances the brain's problem-solving functions.
Barbara Rolls, a professor at UCL University in London, responds to claims that it is possible to lose weight by drinking water:
"There is no evidence that filling with cultural water before meals reduces weight. There is not much water left in the stomach already. But the water in the food you eat, including soup, stays in the stomach longer."
One of the claims is that water beautifies the skin.
However, this is an opinion that has not been confirmed by any research.