With the continuous expansion of weight loss, most young people have the consciousness of controlling energy intake and not overeating. Because they get fat easily, they have introduced sugar-free drinks. Whether it's coke or anything else, there is no sugar. It's just that he changed the sugar into something called aspartame, which is dozens of times sweeter than sugar, but the energy is very small, so he added this thing. Drinking it will be sweet, but there is no energy. Theoretically speaking, drinking a cup of this cola contains little energy, which is not much different from normal boiled water.
But in theory, drinking too much is still easy to cause problems, because aspartame is controversial before, although it contains less energy. Some countries thought that this sweetener might have some side effects, but later no really effective evidence was found to prove it, so they lifted his ban and he could use it normally. After all, it's a bit risky, and eating too much of this stuff will destroy the acid-base balance of our body.
If you like to drink coke, it's no problem to choose diet coke. At least compared with traditional cola, its sugar content and energy are much less. Theoretically, it will not affect your weight gain. You only drink it once in a while, not every day, so it won't affect him or make you fat, and it tastes good. So personally, it is no problem to drink diet coke.