This is the report to assess supplementation with soybean peptides on blood pressure among people with mild hypertension. Overall, soybean peptide consumption for 8 weeks could successfully reduce mean diastolic and systolic BP through the suppression of Angiotensin-converting enzyme (ACE) linked to downstream suppression of angiotensin II formation, which further decreases the sympathetic outflow that leads to hypertension.

This is the report to assess supplementation with soybean peptides on blood pressure among people with mild hypertension. Thirty subjects with systolic blood pressure (SBP) between 120 and 159 mm Hg and/or diastolic blood pressure (DBP) between 80 and 99 mm Hg were randomized to ingest 2 bags of soybean peptides or placebo per day for 8 weeks of a stage. Anthropometric measurements (blood pressure, body weight, body fat) and blood biochemical markers including fasting blood glucose (FBG), albumin, total cholesterol (TC), triglyceride (TG), HDL-C, LDL-C, creatinine (Cr), blood urea nitrogen (BUN), AST, ALT) were examined every four weeks.

Inclusion Criteria:

• Eligible subjects were untreated hypertensive men or women aged between 20 and 80 years old with SBP between 120 and 159 mmHg and/or DBP between 80 and 99 mmHg as measured in a sitting position

Exclusion Criteria:

• Subjects were excluded if they had a history of major cardiovascular disease or severe liver dysfunction;
• Diastolic blood pressure ≥ 100 mmHg or Systolic blood pressure ≥ 160 mmHg;
• Alcoholic;
• US-controlled diabetics;
• Stoke in past one year;
• Mental diseases or melancholia;
• Pregnancy or breast-feeding a child;
• Renal dysfunction;
• Allergic to Soybean peptides.