Effect of Low Glycemic Index Diet on Biochemical Parameters and Body Image in Obesity With Insulin Resistance: A Randomized Clinical Trial

Low Glycemic Index Diet Effects in Obesity With Insulin Resistance

To examine how a low glycemic index diet (LGID) changes biochemical parameters, body measurements, and body image perception in obese individuals with insulin resistance. Obesity groups with insulin resistance who received a control diet (CD) and a LGID will be compared with each other in terms of biochemical parameters, body image perception and body measurements. In addition, each group will be compared with the start and end measurements over the same values.

The main purpose of this study is to determine the effect of LGID on body image perception, biochemical parameters and body measurements in obese individuals with insulin resistance.

Sub-objectives of the study;

Determination of the effect of LGID on fasting blood glucose, fasting insulin level and HOMA-IR levels compared to CD.

Determination of the effect of LGID on body weight, fat mass, muscle mass, body muscle ratio and body mass index (BMI) compared to CD.

Determination of the effect of LGID on body image perception status compared to CD.

Inclusion Criteria:

• BMI above 24 kg/m2, or the either one (fat mass ≧ 30% or waistline > 80 cm)
• Can provide informed consent
• Can be contacted by telephone
• Waist circumference > 90 cm for men and > 80 cm for women

Exclusion Criteria:

• Pregnancy or lactation
• Active or suspected chronic infection
• Treatment affecting insulin sensitivity
• A secondary disease state (Cardiovascular disease, cancer, psychiatric, etc.)
• Any weight loss operation (gastric bypass, gastric balloon, etc.)
• A special nutritional program (cancer, kidney disease, etc.)
• Using any food supplement or medication known to affect whole body metabolism