The LS means of SMI in the quartiles of total protein density (<13.2%, 13.2%~15.0%, 15.0%~17.2% and ≥17.2%) and vegetable protein density (<5.8%, 5.8%~7.5%, 7.5%~9.4% and ≥9.4%) were calculated after adjusting for total energy, fat density, age, gender, BMI, waist, albumin, hemoglobin, lymphocyte, smoking, alcohol use, exercise, diabetes mellitus, and hypertension. This evidence concerns the gene ALB and hypertensive disorder.