OXT and metabolic syndrome: In contrast, in Al-Rawashdeh et al.'s case-control study [18], they found a negative correlation between oxytocin and metabolic syndrome in a study including Caucasian individuals, two-thirds females and one-third males, with an older age group (mean age 51 years old) and more obese (70.5 % of the study population, mean BMI = 33 kg/m2).