Yes. However, there is so much more that goes into losing weight than just what you feed yourself. If you want to get healthier in terms of sleep quality, energy, weight and more then incorporating more plants is definitely the way to go. Yet just because someone is 'vegan' doesn't mean they are eating healthy, whole foods. So focus on variety, real food vs processed food, and eating protein-rich foods that will help you feel full and ready to take on each day.