These hunger index, so called happiness index and other western sources are fraud and without any real study on the ground.
This happened with China also when it was growing fast.. The Westerns always demean Asians to show ownself superior. Never trust these index.
Hunger index is objective analysis as it can measure something real and tangible like regular access to food.
Happiness index is somewhat subjective though.
Indians should not shoot the messenger but look to wipe out the hunger that still exists in their country as soon as possible.