Meta study: paleo diet is a perfect weight-loss diet
If you want to lose weight, a paleo diet is more effective than the diet types that regular nutritional scientists usually propagate. Brazilian researchers from the Universidade Estadual do Ceara come to this conclusion in a meta-study published in Nutrition Journal.
The Brazilians found 11 trials in the scientific literature that compared the effect of a paleo diet on body weight with a considered healthy, but more or less regular diet. The studies lasted from a few weeks to a few years.
Occasionally the test subjects consisted of healthy people, but most of the time they suffered from a chronic condition such as overweight, obesity or type-2 diabetes.
The researchers merged the results of the studies and analyzed them again.
The subjects who followed a paleo diet lost 3.52 kilos more than the subjects in the control groups, where the subjects followed a diet that most food scientists would like you to follow. Sometimes this regular diet was a Mediterranean diet, sometimes a Nordic Diet.
The figures below are simplified. Click on it for a full version.
The waist size of the test subjects in the paleo groups decreased by 2.46 centimeters more than that of the test subjects in the control groups.
"A possible hypothesis to explain the effect of the Paleolithic diet on weight loss, is its satietogenic effect, as verified by Bligh et al., 2015, who tested the acute effect of meals based on the Paleolithic diet on biochemical markers of satiety compared to a guideline-based diet", the researchers speculate.
"Twenty-four men aged between 18 and 60 years old were healthy and had BMI between 18 and 27. Concentrations of glucagon-1 and Peptide YY peptides were significantly increased over 180 minutes with the use of different formulations of the Paleolithic diet compared to the control diet."
"The adoption of the Paleolithic diet is associated with weight loss", write the Brazilians. "This diet can influence the prevention and control of chronic diseases, since excess weight is a risk factor for their development."
"In addition to any food fads, the present study points to the need for further research to evaluate other effects in controlled and well-designed studies regarding sociodemographic, economic, cultural and clinical characteristics of the selected sample, time of adoption of the diet, and type of Paleolithic diet used."
Nutr J. 2019 Jul 23;18(1):41.
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