Considered to be an excellent source of selenium, prawns help in curing cancer. It also helps in improving the circulation of blood, controls the pressure of blood, and even contains a protein that acts as building blocks for the body. Moreover, prawns also have a good amount of calcium, which enhances the health of bones and teeth. It also helps in curing umpteen skin diseases as it is loaded with Vitamin-E. But, best of all, it is loaded with vitamin B-12, it helps in maintaining the complete wellness of the body.