Background and objective: Bisphenol A (BPA) disturbs the metabolism in animals 
and humans through effecting endocrine system. The role of BPA in obesity is not studied 
well. Therefore, current study is conducted to investigate its association with childhood 
obesity. Methods: Using gas chromatography-mass spectrometry (GC-MS/MS) serum BPA 
level was measured in 177 (120 normal and 57 obese) Saudi children. Results: The 
analyses of the data revealed an elevated level of serum BPA, leptin, systolic blood ...

Vitamin D binding protein (DBP) and albumin are the important determinants of circulatory 25(OH)D in adults. Physiological function of vitamin D is particularly regulated by DBPs. Serum parathyroid hormone (PTH) is considered as the biological activity reader of circulating 25(OH)D. We therefore examined the relationships between serum total, free, and bioavailable 25(OH)D versus PTH in apparently healthy Saudi female adults.