When you do use fats, choose monounsaturated fats, such as olive oil or canola oil. Polyunsaturated fats, found in nuts and seeds, also are good choices for a heart-healthy diet. When used in place of saturated fat, monounsaturated and polyunsaturated fats may help lower your total blood cholesterol. But moderation is essential. All types of fat are high in calories.

Fats to chooseFats to limit
  • Olive oil
  • Canola oil
  • Margarine that's free of trans fats
  • Cholesterol-lowering margarine, such as Benecol, Promise Activ or Smart Balance
  • Butter
  • Lard
  • Bacon fat
  • Gravy
  • Cream sauce
  • Nondairy creamers
  • Hydrogenated margarine and shortening
  • Cocoa butter, found in chocolate
  • Coconut, palm, cottonseed and palm-kernel oils

Source: http://www.mayoclinic.org/diseases-conditions/heart-disease/in-depth/heart-healthy-diet/ART-20047702/