Fats and the diet for diabetes
Fat is a concentrated energy source. It provides essential fatty acids your body needs for many functions, and it serves as a carrier for the fat-soluble vitamins, A, E, D, and K.
Because diabetes puts you at increased risk for heart disease, you need to be especially aware of the health effects of dietary fat, obesity, and heart disease. Make sure you do not consume too much fat, but do not exclude it, because a certain amount is needed for your body to function properly.
There are three main types of dietary fat:
- Monounsaturated fat
- Polyunsaturated fat (omega-6 or omega-3)
- Saturated fat
All types of fat supply the same number of calories, but each has a unique source and function within the body.
Fats and how they affect your health Type of fat
Food source
Overall health effect
Effect on your cholesterol
Monounsaturated Olive, canola, and peanut oils; nuts (except walnuts); avocados; and olives
Positive Lowers LDL cholesterol, maintains HDL cholesterol (when used in place of saturated fat)
Polyunsaturated Safflower, corn, sunflower, sesame, soybean, and cottonseed oils; walnuts
Neutral Lowers LDL and HDL cholesterol Saturated Meat; fatty dairy products; coconut, palm, and palm kernel oils; cocoa butter; hydrogenated fats (margarine, shortening)
Negative Raises LDL cholesterol Cholesterol Organ meats (especially liver), meat, poultry, egg yolk, seafood, dairy fat products
Negative Raises LDL cholesterol Omega-3 fats (a type of polyunsaturated fat) Fish (salmon, albacore tuna, sardines, herring, mackerel, trout, mullet, and whitefish); walnuts; flaxseeds and flaxseed oil; hemp and hempseed oil
Positive Lowers LDL, total cholesterol, lowers triglycerides
Fat in your diet - effect on triglycerides
A high intake of fats, sweets, and alcohol can raise your blood triglyceride level. A sedentary lifestyle and excess weight can also increase your triglyceride level. Adults with diabetes should try to keep their triglyceride level less than 1.7 mmol/L (150 mg/dL).
Fat in your diet - effect on cholesterol
Most forms of fat affect your cholesterol level. Specifically, they may affect the amount of LDL ("bad") cholesterol or HDL ("good") cholesterol in your bloodstream. An excessive amount of LDL cholesterol or triglycerides in the blood has been associated with an increased risk of heart disease. And having too little HDL is also unhealthy.
- Think of the "L" in LDL as standing for "lousy." Adults with diabetes should try to keep their LDL cholesterol level 2.0 mmol/L (100 mg/dL) or less.
- Think of the "H" in HDL as standing for "healthy." Adults with diabetes should try to keep their HDL cholesterol level more than 1.03 mmol/L (40 mg/dL) for men and more than 1.3 mmol/L (50 mg/dL) for women.
The table above also shows that some forms of fat are actually beneficial to your heart health and, therefore, to the control of your diabetes. As with carbohydrate and protein, the key to fat consumption is careful balance, not total avoidance. A registered dietitian can help you decide how much and what type of fat is best for you.
Ideally, you should seek out foods that lower your LDL and triglycerides while maintaining your HDL. Increasing monounsaturated and omega-3 fats while decreasing saturated fat is the most effective strategy for achieving this goal.
| Author: | Alison Allen Caroline Rea, RN, BS, MS | Last Updated: April 16, 2008 |
| Medical Review: | Anne C. Poinier, MD - Internal Medicine Ruth Schneider, MPH, RD - Diet and Nutrition Rhonda O'Brien, MS, RD, CDE - Diabetes Educator | |
 | ||
| |