Carbs, Diet & Fat - Comparison Study
Variations in Body Composition and Plasma
Lipids in Response to a High-Carbohydrate Diet
Carbs, Diet & Fat Study - Aim
To examine the extent to which variations in body composition modulate
changes in the lipid profile in response to the ad libitum consumption
of a diet rich in carbohydrates (CHOs) (high-CHO diet: 58 percent of energy
as CHOs) or high in fat and in monounsaturated fatty acids (MUFAs) (high-MUFA
diet: 40 percent of energy as fat, 23 percent as MUFAs).
Carbs, Diet & Fat Study - Research
Methods
Sixty-three men were randomly assigned to one of the two diets that they
consumed for 6 to 7 weeks. Body composition and fasting plasma lipid levels
were measured at the beginning and the end of the dietary intervention.
Carbs, Diet & Fat Study - Results
The high-CHO and high-MUFA diets induced significant and comparable reductions
in body weight and waist circumference. These changes were accompanied
by significant and comparable reductions in total plasma cholesterol and
low-density lipoprotein cholesterol levels. However, the high-MUFA diet
had more beneficial effects on plasma triglyceride concentrations and
on plasma high-density lipoprotein cholesterol levels compared with the
high-CHO diet. Diet-induced changes in waist circumference were significantly
associated with changes in low-density lipoprotein cholesterol levels
in the high-CHO group but not in the high-MUFA group.
Carbs, Diet & Fat Study - Issues
Improvements in plasma lipids induced by the ad libitum consumption of
a high-CHO diet seem to be partly mediated by changes in body weight,
whereas lipid changes induced by the high-MUFA diet seem to be independent
of changes in body weight
Source: Nutraceuticals and Functional Foods
Institute, Laval University. 2003
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