It is an important nutrient that can help correct hormonal imbalances. Certain fishes like salmon and sardine are rich in Omega-3 fatty acids. Omega-3 fatty acids also helps to control stress levels and reduce inflammation, which could cause uncontrolled weight gain. If these fishes are not available, fish oil supplements can be taken. Vegetarians can opt for flax seeds, chia seeds or walnuts with yogurt or smoothies.