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Substituting corn oil in your diet for butter and other fats and
oils
high in saturated fat will lower your cholesterol.
In human clinical trials that compared diets equal in fat content, with
one diet containing corn oil and the other a high saturated fat or oil, the
corn oil diet lowered cholesterol about 1% for each gram of corn oil
substituted. One tablespoon of corn oil contains 14 grams of corn oil, so a
daily substitution of 1 tablespoon of corn oil for butter or other high
saturated fat product, could lower your cholesterol about 15%.
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The suggested substitution of corn oil will decrease
saturated fat in your diet and increase polyunsaturated fat. This will have
a beneficial effect on your cholesterol, and reduce your risk of coronary
heart disease:
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“polyunsaturated
fatty acids reduce LDL cholesterol levels when substituted for saturated fat
acids in the diet. Polyunsaturated fatty acids also can cause small
reductions in HDL cholesterol when compared with monounsaturated fatty
acids, especially when present in high amounts in the diet. Controlled
clinical trials indicated that substitution of polyunsaturated fatty acids
for saturated fatty acids reduces risk for CHD."1
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| Fifteen controlled human studies with over 1,000 subjects
have compared diets in which corn oil was substituted for butter, beef
tallow or other oils. In 14 of those studies, cholesterol levels improved.
Three of those studies are summarized below: |
| Study |
Participants |
Corn Oil Diet compared to Diet Containing: |
Time on Diets |
Amount of Corn Substituted (Tablespoons)* |
Cholesterol
(Mean Concentration)
|
| 1. Ng et al. |
83 subjects (aged 20-34) 22 Females
61 Males |
Coconut oil |
35 days |
2.9 |
189
Vs
122 |
119
Vs
69 |
52
Vs
38 |
reduced
36% |
reduced
42% |
reduced
26% |
|
| 2. Insull et al. |
61 subjects (ages 20-64) 35 Females
26 Males |
Normal Diet |
35 days |
0.8 |
170
Vs
152 |
97
Vs
86 |
56
Vs
50 |
reduced
11% |
reduced
12% |
reduced
11% |
|
| 3.Wardlaw & Snook, 1990 |
17 males |
Butter |
35 days |
2.1 |
243
Vs
191 |
177
Vs
132 |
43
Vs
42 |
reduced
21% |
reduced
26% |
reduced
3% |
|
| * Calculated by comparing the amounts of Polyunsaturated
Fatty Acids in the two diets |
| 1. Ng TKW, Hassan K, Lim JB, Lye MS, Ishak R.
Nonhypercholesterolemic effects of a palm-oil diet in Malaysian
volunteers. Am J Clin Nutr. 1991 Apr; 53(4 Suppl):1015S-1020S. |
| 2. Insull W Jr, Silvers A, Hicks L, Probstfield JL.
Plasma lipid effects of three common vegetable oils in reduced-fat diets
of free-living adults. Am J Clin Nutr. 1994 Aug;60(2):195-202. |
| 3. Wardlaw GM, Snook JT. Effect of diets high in butter,
corn oil, or high-oleic acid sunflower oil on serum lipids and
apolipoproteins in men. Am J Clin Nutr. 1990 May;51(5):815-21. |
| 1National Cholesterol Education Program, National Heart Lung
and Blood Institute, National Institutes of Health. Third Report of the
National Cholesterol Education Program Expert Panel on Detection,
Evaluation and Treatment of High Blood Cholesterol in Adults (Adult
Treatment Panel III). NIH Publication No. 02-5215.
http://www.nhlbi.nih.gov/guidelines/cholesterol/index.htm.
2002 |
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