Can you lose belly fat on a vegan diet? How do vegans get a flat stomach? Here is how a vegan diet can help you have a flat stomach. Opting for more vegetables than processed grains and simple sugars is vital for weight loss. A plant-based diet generally relies on grains, fruits, legumes and vegetables. To obtain a flat stomach, reduce your sugars and refined grains (like rice, pasta, white potatoes, and couscous) intake and add more vegetables! According to dietitians, a vegan diet may help get rid of stubborn Bell