The Science Behind the Paleo Diet

What Research Says

cooked meat with sliced fruits
cooked meat with sliced fruits


The Paleo diet has gained significant attention for its focus on whole, unprocessed foods. While some critics argue that the diet is merely a fad, a growing body of scientific evidence suggests otherwise. In this post, we'll explore some of the key studies that support the Paleo diet's potential health benefits.

Cardiovascular Health

Study: "Paleolithic nutrition improves plasma lipid concentrations of hypercholesterolemic adults: a randomized controlled trial"
Published in: Lipids Health Dis. 2009
Findings: This study found that participants who followed a Paleo diet for 10 weeks had improved cholesterol levels, including a decrease in LDL ("bad" cholesterol) and an increase in HDL ("good" cholesterol).

Weight Loss

Study: "Effects of a short-term intervention with a paleolithic diet in healthy volunteers"
Published in: European Journal of Clinical Nutrition, 2008
Findings: Participants who followed a Paleo diet for three weeks lost weight and reduced their waist circumference, suggesting the diet's effectiveness for weight loss.

Blood Sugar Control

Study: "A Paleolithic diet is more satiating per calorie than a Mediterranean-like diet in individuals with ischemic heart disease"
Published in: Nutrition & Metabolism, 2010
Findings: The study found that a Paleo diet led to greater improvements in blood sugar levels compared to a Mediterranean-like diet, making it a viable option for those looking to manage diabetes.

Gut Health

Study: "Favourable gut flora metabolism and appetite regulating hormones after 1 year of paleolithic diet"
Published in: Journal of Clinical Endocrinology & Metabolism, 2013
Findings: This study found that a Paleo diet positively impacted gut flora and increased the production of appetite-regulating hormones, suggesting potential benefits for digestive health.

Inflammation Reduction

Study: "A Paleolithic diet confers higher insulin sensitivity, lower C-reactive protein and lower blood pressure than a cereal-based diet in domestic pigs"
Published in: Nutrition & Metabolism, 2006
Findings: The study found that a Paleo diet led to lower levels of C-reactive protein, a marker of inflammation, compared to a cereal-based diet.

Nutrient Density

Study: "Nutrient content of the U.S. food supply, 1909-2000"
Published in: Home Economics Research Report, 2004
Findings: While not directly studying the Paleo diet, this research highlights the decline in nutrient density in modern diets, supporting the Paleo emphasis on nutrient-dense, whole foods.


While more research is needed to fully understand the long-term effects of the Paleo diet, existing studies offer promising insights into its potential benefits. From cardiovascular health to weight loss and blood sugar control, the science is increasingly supporting the Paleo diet as a viable option for a healthier lifestyle.