Clinical Research Directory

Inclusion Criteria (BMI): * 27 \<= BMI \< 45 kg/m2 Inclusion Criteria (Elevated Blood Pressure): * Systolic blood pressure between 120-159 mmHg OR diastolic blood pressure between 80-99 mmHg. Can be on \>=1 antihypertensive medications if on stable dose for past 3 months * Systolic blood pressure \<120 mmHg OR diastolic blood pressure \<80 mmHg, if on stable dose of \>=1 antihypertensive medications for past 3 months Exclusion Criteria (Blood Pressure): * Elevated blood pressure: Systolic blood pressure \>=160 mmHg OR diastolic blood pressure \>=100 mmHg Exclusion Criteria (Underlying medical conditions/diseases): * Have had a heart attack, stroke, coronary heart disease, congestive heart failure, or angina * Have had coronary artery bypass surgery or cardiac catheterization such as percutaneous transluminal coronary angioplasty (PTCA), cath or stent placement * Have diabetes * Have medical contraindications to regular, unsupervised physical activity * Have moderate to severe asthma, or chronic obstructive pulmonary disorder (also called emphysema or chronic bronchitis) * Had cancer in the past 5 years (except non-melanoma skin cancer) * Currently under medical care for digestive issues, gastrointestinal distress, abdominal pain, or diarrhea * Had an organ transplant Exclusion Criteria (Medications): * Not stable on medications over the past 3 months (e.g., cholesterol, thyroid, estrogen-hormone, psychiatric) * Currently taking prescription pain medications (e.g., Vicodin, Oxycodone) Exclusion Criteria (Weight and diet related): * Have binge eating disorder or bulimic compensatory symptoms * Currently taking medication designed to lose weight * Have undergone weight-loss surgery (e.g., gastric bypass, lap band) * Have lost \>10 pounds in the past 6 months * Currently in a weight-loss program (e.g., Jenny Craig) * Currently participating in any support groups that focus on weight or eating habits (e.g., Overeaters Anonymous) * Currently on a special diet for a serious health condition * Not willing to discontinue a special diet (e.g., Atkins) Exclusion Criteria (Behavioral related): * Planning to move in the next year * Currently pregnant or planning to be within the next year * Participating in another research study * No regular access to a mobile phone and Internet * Not able to speak, read, or understand English for informed consent * Not willing to be randomized * Did not complete eligibility process successfully or in a timely manner * Staff discretion or judgement * Live within Bay Area (e.g., \~1-hour commute from Stanford research center)