The Effect of Ketogenic-caloric Restricted Diet on Metabolic Endotoxemia in Prediabetic Obese Adults

Summary

Insulin resistance increases the risk of type 2 diabetes and cardiovascular disease, with gut dysbiosis emerging as a contributing factor. Metabolic endotoxemia, characterized by elevated serum lipopolysaccharides (LPS), disrupts insulin signaling via inflammatory pathways. While dietary interventions may lower LPS levels and improve insulin resistance, evidence on the effectiveness of ketogenic diet in this context remains limited.

This randomized controlled trial aims to assess the effects of a ketogenic-caloric restricted diet on metabolic endotoxemia, measured by serum LPS levels, in prediabetic obese Jordanian adults aged 18-40 years in Amman over 12 weeks. Ninety participants will be randomly assigned to one of three groups (n=30 each): a ketogenic-caloric restricted diet, a normal-fat caloric restricted diet, or a control group (normal-fat without caloric restriction). Anthropometric parameters and dietary intake will be evaluated at baseline, week 6, and week 12. Blood samples will be collected at baseline and week 12 for measuring fasting glucose, insulin, LPS, inflammatory cytokines. Dietary adherence will be monitored through food records. This study aims to provide new insights into the role of dietary interventions in modifying metabolic endotoxemia and improving insulin resistance.

Conditions

• Insulin Resistance
• Metabolic Endotoxemia
• Inflammation Biomarkers
• Ketogenic Diet
• Caloric Restriction
• Obesity
• Prediabetes

Interventions

OTHER

Ketogenic diet with caloric restriction

Participants in this group will follow a ketogenic diet with caloric restriction (-550 kcal/day), consisting of approximately 5-10% carbohydrates, 15-25% protein, 70-80% fat. The daily carbohydrate intake will be limited to less than 50g per day. The intervention will last for 12 weeks, with regular dietary monitoring and adherence checks every two weeks.

OTHER

Normal diet with caloric restriction

Participants in this group will follow a normal diet with caloric restriction (-550 kcal/day), consisting of approximately 45-60% carbohydrates, 15-25% protein, 20-30% fat. The intervention will last for 12 weeks, with regular dietary monitoring and adherence checks every two weeks.

OTHER

Normal diet without caloric restriction

Participants in this group will follow a normal diet without caloric restriction, consisting of approximately 45-60% carbohydrates, 15-25% protein, 20-30% fat. The intervention will last for 12 weeks, with regular dietary monitoring and adherence checks every two weeks.

Sponsors & Collaborators

• University of Jordan

  lead OTHER

Study Design

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Model

PARALLEL

Eligibility

Min Age

18 Years

Max Age

40 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2025-05-05

Primary Completion

2025-08-05

Completion

2025-08-05

Countries

• Jordan

Study Locations