High Protein vs High Fiber Diets for Weight Loss in Women
Author Information
Author(s): Te Morenga Lisa A, Levers Megan T, Williams Sheila M, Brown Rachel C, Mann Jim
Primary Institution: University of Otago
Hypothesis
Does a high protein diet provide greater benefits for weight loss compared to a high fiber diet in women at risk for metabolic syndrome?
Conclusion
A high protein weight-reducing diet led to greater fat loss and lower blood pressure compared to a high carbohydrate, high fiber diet in overweight and obese women.
Supporting Evidence
- Participants on the high protein diet lost more body weight and total body fat compared to the high fiber diet.
- Diastolic blood pressure decreased more significantly in the high protein group.
- Both diets resulted in reductions in total body weight, fat mass, and waist circumference.
Takeaway
Women who ate more protein lost more weight and had lower blood pressure than those who ate more fiber, even though both groups lost weight.
Methodology
Eighty-three overweight or obese women were randomized to either a high protein or high fiber diet for 8 weeks, with energy intakes reduced to achieve weight loss.
Potential Biases
Potential bias due to self-reported dietary adherence and participant dropouts.
Limitations
The study duration was short, and the findings may not generalize to very high-risk individuals.
Participant Demographics
Women aged 18-65 years, overweight or obese with a BMI ≥ 27 kg/m2.
Statistical Information
P-Value
0.039
Confidence Interval
95% CI: -2.5, -0.1
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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