CRP and obstructive sleep apnea syndrome: In the literature, it was shown that the prevalence of OSA is also increased in patients with a variety of MetS related conditions, including hypertension [52,53], hyperlipidemia [54] total cholesterol, HDL and LDL cholesterol, triglycerides concentrations [55], stroke [56], cardiovascular disease [57], diabetes mellitus (71), CRP [58], and NAFLD [59].