Of course, there are many things you can do. Here are some tips:
-Exercise and diet to lose weight. Decrease your calorie intake while maintaining daily exercise, and your cholesterol will most certainly drop accordingly. It's one of the most surefire ways.
-Lower intake of bad fats (saturated, TRANS) and up the intake of good fats (mono/poly unsaturated). STOP eating dairy products!!! Really, really limit your intake of everything dairy, including milk and cheese. And eat very, VERY little fatty meats - that means NO ground beef. A lean steak here and there won't hurt, nor will most white meats. Also try to decrease your sodium intake, and drink more water. And as far as what you CAN eat...olive oil is great, and other good oils are canola and sesame seed.
-Increase intake of flavanoids. Flavanoids have shown to be very beneficial for your heart and could aid in decreaseing bad cholesterol levels in arteries by inducing an immune response to flush them out. Items rich in flavanoids include red wine, olive oil, and dark chocolate (stick with 75% cocoa or higher).
If you follow these guidelines, your cholesterol will decrease significantly.