Moderation is key when it comes to how much fat to eat, but some fats are better for your health than others.
Choose Healthy Fats
Limit the amount of saturated fat (found in butter, fried foods, whole milk and fatty meat) and trans fats (found in vegetable oils, some baked goods, and margarine) and opt for heart healthy fats. Choose olive oil or canola oil, as well as foods rich in omega-3 fats like salmon, tuna, and halibut. Nuts and avocados also contain good-for-you fats. >The Skinny on Fats
| Credit: Randy Mayor

The Good Fats

Monounsaturated fat: The fat of choice for heart health helps lower total cholesterol levels and LDL, or "bad" cholesterol, and raises HDL, or "good" cholesterol. Foods that are rich in monos include avocados, most nuts and nut oils, olive oil, and canola oil.

Polyunsaturated fat: It lowers total cholesterol. Vegetable oils such as corn, safflower, sunflower, and soybean oil are rich in polyunsaturated fats. Fatty fish, such as salmon, are a rich source of a heart-healthy polyunsaturated fat called omega-3 fatty acids.

The Bad Fats

Saturated fat: It raises blood cholesterol levels and increases the risk of heart disease. A good rule of thumb is to limit saturated fat to less than one-third of your daily fat intake. Foods rich in saturates include butter, full-fat dairy products, red meats, and two vegetable products–palm kernel oil and coconut.

Trans fat: Are formed when hydrogen is added to vegetable oil, converting it from a liquid to a solid (like corn oil margarine). Trans fat is found in partially hydrogenated oils (and in many stick margarines), and gives cookies, chips, and crackers a long shelf life. The National Academy of Sciences concluded that trans fats raise blood cholesterol levels, and probably more so than saturated fat. The simple solution is to avoid them altogether.

Here's how to avoid trans fat products:

  • Look for the words partially hydrogenated on the label. This is where trans fats are found.
  • Watch your intake of processed foods. Many are made with partially hydrogenated oils because these oils are shelf stable. Frozen apple pie, doughnuts, crackers, and cookies top the list, according to Consumer Reports. (Surprisingly, potato chips, peanut butter, and salad dressings were virtually free of trans fats.)
  • Use butter and oil in place of margarine (which is high in trans fats). They taste better, and for now, they appear to be better for you.
  • Focus on natural foods—ones with ingredient lists you can understand (or better yet, whole foods, like raisins, nuts, and fresh fruit, with no ingredient list at all).