Nicotinamide adenine dinucleotide phosphate oxidase (NAD(P)H oxidase) is an enzyme involved in the progression of the disorders related to the MetS, such as liver injury [11], hyperglycemia [12], increased oxidative stress in diabetes and obesity [2, 13], hypertension [14], and impaired endothelium-dependent dilation [15]. The gene discussed is FMO5; the disease is metabolic syndrome.