This study has been designed aiming at study of the effect of CLA on the indices of weight, waist size, fat and lean body mass, serum level of Leptin and serum insulin, insulin resistance, level of gloucose and serum lipid patterns.This study will be conducted using the random clinical trial method of controlled double blind type with placebo on 60 obese adults of both genders (18-45) with a BMI given as 30-34.9 kg/m2. The individuals were chosen from among the clients referring to the Clinic of Nikan Hospital in the city of Tehran using randomizd parallel sampling method with a three months of intervention.the people will randomly received a daily amount of 3 g CLA (three 1000 mg capsules) or placebo (three 500 mg capsules containing paraffin oil).The study arrival criteria are given as follows:
No weight loss or gain over 2 kg in the recent three months, the samples should have no record of diabetes, cardiac disorders, cerebral stroke, suffering from renal and hepatic diseases, chronic inflammatory diseases, thyroid diseases and gastroenterological diseases, not consuming hypoglycemic medicines, blood-pressure lowering drugs or anti blood presure medicines, beta blockers, steregene, porgesterone, not consuming any kinds of supplementations such as antioxidant vitamines, minerals, Omega 3 and CLA within two months prior to commencement of study, smoking, using alchoholic drinks, no respiratory or joint complications, not being pregnant or breastfeeding and having no intention for getting pregnant. Moreover, the samples suffering from specific complications such as epigasteric pains will be exclued from this study. The female samples will be excluded from this project in case of pregnancy.