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To Combat Obesity, Reduce Calories and Replace Carbohydrate and Fat Intake with Protein, Study RecommendsWednesday, February 16, 2011
(American Meat Institute)
For those wishing to lose weight or avoid
gaining weight, reducing overall caloric intake
is key, perhaps by substituting protein intake
in place of both carbohydrate and fat intake,
according a to a new study published in the
American Journal of Clinical Nutrition.
Researchers examined trends in carbohydrate, fat and protein intakes in adults and their association with energy intake (calories) by tracking intake over time using data from the National Health and Nutrition Examination Survey (NHANES) — a program of studies designed to assess the health and nutritional status of adults and children in the United States.
According to the study, one of the most striking findings was the consistently strong and negative association with increasing percentage calories from protein and daily energy intake across all three body mass index categories (normal weight, overweight and obese) in both NHANES I, 1971-75, and NHANES 2005–2006.
This finding may be surprising to many as it contradicts the belief that the rise in obesity has been caused by increased caloric intake due to the overconsumption of protein-based foods.
The research showed that in NHANES
2005–2006, a one percent increase in the
percentage of energy from protein was
associated with a decrease in energy intake
(calories) of 32 kcal (substituted for
carbohydrates) or 51 kcal (substituted for
fat). Similar findings were seen across all
body mass index categories, in men and women,
and in NHANES I.
“This finding is all the more interesting given the exclusion of individuals following any type of special diet (such as low-carbohydrate or high-protein diets) and supports human experimental data in obese individuals that a high-protein diet can be more effective at increasing satiety, reducing hunger and energy intake, and achieving greater weight loss,” the researchers noted.
“The decrease in energy intake was greater
if protein was substituted for fat, but the
effect was still substantial when protein was
The researchers said a shift toward more carbohydrates during the years examined was associated with an overall increase in energy intake and an increase in obesity prevalence, and concluded, “Dietary interventions to combat the obesity epidemic should focus on reducing total energy intake, perhaps by substituting protein intake in place of both carbohydrate and fat intake.”
To view an abstract of the study, click here: http://bit.ly/eXvJlK.