Conjugated Linoleic Acid (1:1 Isomer Mixture) Intake in Overweight People

Inclusion Criteria: * aged 30-55 years * grade II overweight (BMI≥27 but \<30 kg/m2) * not to be adhered to any calorie restriction diet * not to be taking any weight control medication or have lost more than 5 kg in the three months prior to the study Exclusion Criteria: * suffering of serious concomitant disease such as diabetes mellitus type II, metabolic syndrome (according to the criteria of the Adult Treatment Panel III), cancer, kidney disease, HIV, tuberculosis, cardiovascular disease, chronic obstructive pulmonary disease, eating disorders. * having undergone bariatric surgery and/or intestinal resection * breastfeeding and pregnancy. * not to give their signed, informed consent to be included in the study.