Kalonji are basically the onion seeds which are very high in fibre and it is quite healthy for your body. These kalonji seeds have some natural components in them which help you to burn fats of your body and thus it is useful in weight loss. Having a natural way to lose your body weight is highly appreciated by many people as they don't want to spend too much money on it. If this kalonji seed is eaten early in the morning it will help you in relieving your constipations and also other harmful toxins from your body and keep you healthier.