There was a statistically significant (p < 0.01) difference observed in the adjusted odds ratios of having PPD ≥ 4 mm for NAFLD (odds ratio = 1.881; 95% CI 1.184-2.9870); after adjusting for body mass index (BMI), regular exercise habits, number of teeth present, presence of periodontitis, Brinkman index, raised serum C-reactive protein (CRP), blood pressure, sex, and age [77]. This evidence concerns the gene CRP and periodontitis.