Cheese is the main ingredient that goes on the pizza. Without cheese, there is no pizza! But cheese is sadly very unhealthy. Cheese is a dairy product that does offer a good amount of protein, but it also comes with a lot of saturated fat. Saturated fat is known to increase obesity, risk of heart problems, and many other health issues.
So avoid extra cheese toppings, cheese stuffed crust, etc. and ask for less cheese. It may make the pizza less enjoyable, but your heart will rejoice.