Dear Sibsankar, that’s a very interesting question, yes of course you can lose weight by only eating organic food products. Otherwise also Consuming more fresh produce, organic such as fruits and vegetables has been a consistent link to weight-loss because they are high in fiber, which can help control appetite. Eat various different colored fruits and vegetables on a daily basis because it will provide you with various vitamins, minerals, and antioxidants that your body needs to remain healthy. Try including protein and fiber rich sources like pulses, whole grain cereals, millet etc. Whole sources of protein are typically higher in protein and lower in calories, which makes them better for fat loss.