No, you cannot lose weight by simply not eating. Your body needs a certain amount of calories to maintain its current weight. If you eat less than this, your body will start to burn fat for energy and you will lose weight.

However, if you eat significantly fewer calories than your body needs, your metabolism may slow down, making it harder to lose weight in the future.

Additionally, if you don’t eat enough, then you won’t be getting the nutrients that your body needs to stay healthy. For sustainable and healthy weight loss, it is recommended to reduce calorie intake while also exercising regularly.