HP and cancer: When analyzing HNC by cancer site, we found an increased risk of cancer in the lip and oral cavity per SD increase in haptoglobin (HR: 1.21; 95%CI: 1.14-1.29), platelets (HR: 1.12; 95%CI: 1.01-1.24), leukocytes (HR: 1.17; 95%CI: 1.08-1.28), and sedimentation rate (HR: 1.18; 95%CI: 1.02-1.35).