It can certainly help you lose weight, however, it does come at a cost. A calorie deficit diet can cause fatigue, nausea, irritability, weakness, and gallstones among other things. It can also lower your metabolic rate and alter your fullness receptors while making it hard to maintain a lower weight.
Each person needs a certain amount of calories to maintain steady and healthy weight loss. The bottom line is that a balanced diet is the healthiest way to lose weight and keep it off.
P.S. We don’t count calories.