Scientists believe that cheese contains a chemical compound that could prevent or cure deafness caused by exposure to loud noise.
In animals, D-methionine has been found to help protect and reverse damage to nerve cells in the ear.
In the army trial some recruits will take the compound in a drink after their weapons training, and others will take a placebo.
All will have their hearing tested several days later. You have to eat a lot cheese to get the benefit.
