Efficacy and Safety of the DASH Diet in Adults With Moderate Chronic Kidney Disease: Pilot Study

Inclusion Criteria: * ≥18 years old * eGFR 30-59 ml/min/1.73m2 * SBP ≥ 130 mmHg or DBP ≥ 80 mmHg * willing to eat one meal on-site 5 days/week Exclusion Criteria: * baseline potassium \>4.6 mEq/L while not taking potassium supplements (if potassium is ≥ 5.0 while taking potassium supplements, a potassium of 4.6 or less must be demonstrated off supplements * evidence of hyperkalemia (\>5.1 mEq/L) within last 6 months * ≥ 0.5 mg/dl increase in serum creatinine in past 6 months * albumin-to-creatinine ratio \> 200 mg/mmol * insulin requiring or poorly controlled diabetes mellitus * cardiovascular event within previous 6 months * change in anti-hypertensive medications in last 2 weeks, or anticipated medication change during study period * unwillingness to eat only study food for 21 day study period * unwillingness or inability to discontinue vitamin and mineral supplements or antacids containing potassium, magnesium or calcium * use of aldosterone antagonist * use of oral corticosteroids * alcohol intake \>14 drinks/week * unstable doses of psychotropics or phenothiazine * weight reducing medications * use of medications for erectile dysfunction during study period * pregnant, breast feeding, or planning pregnancy during study period * chronic disease that may interfere with participation * history of organ transplant * any serious illness that would interfere with participation or make DASH diet unsafe * planning to leave the area during the study period * significant food allergies, preferences, or dietary requirements that would interfere with diet adherence * investigator discretion for safety or compliance reasons