Between the 600 margarine commercials you see on TV every day and the 400 nutrition bulletins and reports you hear about on the news every night, you get a huge amount of information about the fats that you eat. For example, you have probably heard of the following terms:

  • Saturated fat
  • Unsaturated fat
  • Polyunsaturated fat
  • Mono-unsaturated fat
  • Fatty acids
  • Essential fatty acids
  • Trans fatty acids
  • Omega-3 and omega-6 fatty acids
  • Partially hydrogenated fat
Have you ever wondered what it all means, or why it matters? Why can't we just eat, drink and be merry? In this edition of HowStuffWorks, you'll find out exactly what these terms mean and how the various forms of fat you find in foods affect your body.