Buckwheat breakthrough? diet shows promise for hypertension

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Age 18\~60 years. 2. Established Diagnosis of Grade 1 Hypertension (initial diagnosis or free from antihypertensive drugs within a month): 140mmHg≤ Office SBP\<160mmHg for three measurements at different days without any antihypertensive medications, according to the "2010 Chinese Guidelines for Prevention and Treatment of Hypertension". 3. Patients with informed consent after thorough explanation. Exclusion Criteria: 1. Antibiotics or probiotics usage within last 4 weeks 2. Participants of other clinical trials related to hypertension currently or within last 3 months 3. Antihypertensive medications usage currently or within last month 4. Diagnosed secondary hypertension 5. Severe hepatic or renal diseases ((ALT \>3 times the upper limit of normal value, or end stage renal disease on dialysis or eGFR \<30 mL/min/1.73 m2, or serum creatinine \>2.5 mg/dl \[\>221 μmol/L\]) 6. History of large atherosclerotic cerebral infarction or hemorrhagic stroke (not including lacunar infarction and transient ischemic attack \[TIA\]) 7. Hospitalization for myocardial infarction within last 6 months; Coronary revascularization (PCI or CABG) within last 12 months; Planned for PCI or CABG in the next 12 months. 8. Sustained atrial fibrillation or arrhythmias at recruitment disturbing the electronic BP measurement. 9. NYHA class III-IV heart failure; Hospitalization for chronic heart failure exacerbation within last 6 months. 10. Severe valvular diseases; Potential for surgery or percutaneous valve replacement within the study period. 11. Dilated cardiomyopathy; Hypertrophic cardiomyopathy; Rheumatic heart disease; Congenital heart disease. 12. Other severe diseases influencing the entry or survival of participants, such as malignant tumor or acquired immune deficiency syndrome. 13. Cognitive impairment or severe neuropsychiatric comorbidities who are incapable of providing their own informed consent. 14. Participants preparing for or under pregnancy and/or lactation. 15. Other conditions inappropriate for recruitment according to the investigators.