The reasons why vegetarians can't lose weight are as follows: 1 If the total calorie intake of food is less than the calories consumed, you can lose weight. You don't have to be a vegetarian. On the contrary, vegetarians and meat have calories. Once the calories are excessive, vegetarianism will lead to obesity. 2. Not eating meat will lead to the lack of protein. When protein's intake is insufficient, protein, carbohydrate and fat in human body will be out of balance, which will lead to immunity decline, memory decline, anemia, indigestion and other problems. For women, too little protein will lead to abnormal hormone secretion, irregular menstruation, abnormal reproductive function, and more seriously affect reproductive capacity. Excessive consumption of fruits and vegetables is harmful to your health. Fruits and vegetables are rich in dietary fiber. If you eat too much, it will accelerate the discharge of mineral nutrients in the gastrointestinal tract, resulting in the nutrients in the body being discharged before being absorbed. 4. Vegetarians who only eat vegetables and don't eat staple food will have a strong hunger because of lack of body fat, and will eat more than normal diet. Eat more vegetables, and because vegetables can absorb oil, it is easier to absorb more fat, which leads to the fatter you eat. The advice for vegetarians is as follows: Try not to eat only vegetarian food to lose weight, and don't hurt your body for slimming. Please stay away from this weight loss misunderstanding!