Dietary Prevention of Heart Failure in Hypertensive Metabolic Syndrome

Inclusion Criteria: * Veterans aged 45 years with HTN * here defined as screening systolic BP 130 and/or diastolic BP 85 mmHg, or current use of anti-hypertensive drugs * and metabolic syndrome * body mass index 30 kg/m2 and/or waist circumference \>94 cm * Participants must also be willing to participate in the WHEELS-I program by using a smartphone application or email Exclusion Criteria: * On-treatment systolic BP of \>160 mmHg at screening visit * previous history of HF * left ventricular ejection fraction \<50% * moderate or severe valvular heart disease * myocardial infarction or stroke within the prior 6 months * chronic kidney disease with estimated glomerular filtration rate \<45 ml/min/ 1.73m2 * unoperated aortic aneurysm for which surgery is indicated, prior hyperkalemia requiring urgent treatment * hemoglobin \<9 gm/dL * investigator-determined factors: severe pulmonary disease, e.g.: * oxygen-requiring * hepatic disease, e.g.: * cirrhosis * severely uncontrolled diabetes (hemoglobin A1c \>10%) * active cancer other than non-melanoma skin or low-risk prostate cancer * other comorbidity with expected survival \<12 months * active alcohol/illicit substance abuse * and/or a history of persistent nonadherence to treatment * Veterans involved in another study (unless it is survey-only and the other investigator will allow us to invite the person in a survey-only study to consider our study)