Professor Shuh Sheen of the University of Kentucky says that a protein extracted from tobacco is better for human food than eggs, cheese or milk. The remaining fiber residue after the elimination of the protein can be used to make cigarettes and these cigarettes would cause less damage than those we currently burn.
According to Sheen, if you work tobacco in one square kilometer you can get 800 kg of protein and waste, of course, can be used to make cigarettes.
In the industrialized nations there is no hunger, so it does not seem that this discovery has much application, but the same does not happen in the nations of the third world, which here would have a correct use. Not only tobacco, but also alfalfa, soy or sugar cane are suitable for obtaining this protein.