Obesity is because the calories involved are greater than the calories consumed, and the excess calories will be converted into fat and accumulated in the body.

Then, ice cream will make you fat, because it contains a lot of cream and sugar and a lot of calories. Eating too much will definitely make you fat.

Beef will also be fat, but the calories are lower than ice cream. Beef will supplement a lot of animal protein, so eating too much will make you fat.

Generally speaking, to lose weight or maintain weight, it is necessary to make the calories involved equal to or less than the calories consumed.