I have definitely seen someone who didn't eat dinner to lose weight for many days, but finally gained more weight because the feeling of starvation caused them eat too much for breakfast and lunch the next day. So, we aren't able to loss weight without food. In fact, our body is just like a room; someone comes in and asks others to get out otherwise it will be very crowded. We need to eat three meals every day, but each meal should be under a certain quantity. Meanwhile, you should balance the nutrition of each meal. If you do manual work, more carbohydrate is essential. If you stay at the office and do a lot of brainwork, proteins and fibers must appear on your dining table. All I mentioned above is not that important because the most important thing you have to do is to exercise. Boosting your blood flow to digest the extra nutrients which your body doesn't need but which can be turned into fat and stored in your body. Losing weight is good, but it must be based on a healthy body.