NOS3 and hypertensive disorder: Similarly, the risk of hypertension was higher among subjects who had the habit of alcohol consumption carrying eNOS intron 4 aa genotype (OR 12.00: 95% CI 1.20–143.73) in comparison with the subjects who had the habit of alcohol consumption carrying eNOS intron 4 ab genotype (OR 1.56: 95% CI 0.91−2.65) and eNOS intron 4 bb genotype (OR 2.07: 95% CI 1.41−3.04) (Table 5).