How do i increase my lung capacity? also my cholesterol is at 4.9 mmol/l, what types of food should take more of and avoid?

Basic biology: You don't increase your lung capacity any more than you can increase your adult height. It would require changing the shape and volume of your chest. Your cholesterol level is in a healthy range, and diet isn't the key to managing cholesterol despite all the talk. Physical fitness and avoiding tobacco will benefit you far more in both areas. Best wishes.