BZZZT! Wrong answer!
Re peanut butter, just because a fat is not an essential fatty acid does not mean that it is not a healthy fat! in fact, peanuts and peanut butter are high in mono-unsaturated fat which is considered to be a "healthy" fat. In fact, research done at Penn State found that a diet with high mono-unsaturated fat improved the blood lipid profile of the subjects and lowered their CVD(cardio vascular disease) risk profile by 21%
For all you peanut butter lovers out there, continue to eat it with a clear conscience, just make sure that it is the "natural" kind that contains no added sugars and sat fats!
jb
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Am J Clin Nutr 1999 Dec;70(6):1009-15 Related Articles, Links
Comment in:
Am J Clin Nutr. 2000 Sep;72(3):853.
Am J Clin Nutr. 2000 Sep;72(3):853-6.
High-monounsaturated fatty acid diets lower both plasma cholesterol and triacylglycerol concentrations.
Kris-Etherton PM, Pearson TA, Wan Y, Hargrove RL, Moriarty K, Fishell V, Etherton TD.
Graduate Program in Nutrition, The Pennsylvania State University, University Park, PA 16802, USA.
[email protected]
BACKGROUND: Low-fat diets increase plasma triacylglycerol and decrease HDL-cholesterol concentrations, thereby potentially adversely affecting cardiovascular disease (CVD) risk. High-monounsaturated fatty acid (MUFA), cholesterol-lowering diets do not raise triacylglycerol or lower HDL cholesterol, but little is known about how peanut products, a rich source of MUFAs, affect CVD risk. OBJECTIVE: The present study compared the CVD risk profile of an Average American diet (AAD) with those of 4 cholesterol-lowering diets: an American Heart Association/National Cholesterol Education Program Step II diet and 3 high-MUFA diets [olive oil (OO), peanut oil (PO), and peanuts and peanut butter (PPB)]. DESIGN: A randomized, double-blind, 5-period crossover study design (n = 22) was used to examine the effects of the diets on serum lipids and lipoproteins: AAD [34% fat; 16% saturated fatty acids (SFAs), 11% MUFAs], Step II (25% fat; 7% SFAs, 12% MUFAs), OO (34% fat; 7% SFAs, 21% MUFAs), PO (34% fat; 7% SFAs, 17% MUFAs), and PPB (36% fat; 8% SFAs, 18% MUFAs). RESULTS: The high-MUFA diets lowered total cholesterol by 10% and LDL cholesterol by 14%. This response was comparable with that observed for the Step II diet. Triacylglycerol concentrations were 13% lower in subjects consuming the high-MUFA diets and were 11% higher with the Step II diet than with the AAD. The high-MUFA diets did not lower HDL cholesterol whereas the Step II diet lowered it by 4% compared with the AAD. The OO, PO, and PPB diets decreased CVD risk by an estimated 25%, 16%, and 21%, respectively, whereas the Step II diet lowered CVD risk by 12%. CONCLUSION: A high-MUFA, cholesterol-lowering diet may be preferable to a low-fat diet because of more favorable effects on the CVD risk profile.