The purpose of this randomized study is to assess the efficacy of a mobile application for the improvement of blood pressure and insulin resistance in people with metabolic abnormalities.

The purpose of this randomized study is to assess the efficacy of a mobile application for the improvement of blood pressure and insulin resistance in people with metabolic syndrome.

This study is a 24 week follow up randomized prevention trial. Participants visit for a screening test, then eligible participants are randomly assigned for one of the following arms; 1 intervention group using a mobile application to monitor their life style behaviors, 1 intervention group using a mobile application for personal coaching on purpose of improving their life style behavior, and 1 control group providing education about managing life style behaviors.

Inclusion Criteria:

• "Etiologic study on cardiovascular and metabolic diseases: prospective cohort study (Severance Hospital IRB No. 4-2013-0661)" participants

• Smartphone user

• Metabolic abnormality. Having 2 or more components of metabolic syndrome described below:

  1. Central obesity : waist circumference ≥ 90cm in male, ≥ 80cm in female
  2. Systolic/diastolic blood pressure ≥ 130/85 mmHg
  3. Serum triglyceride ≥ 150 mg/dL
  4. Serum high density lipoprotein cholesterol < 40 mg/dL in male, 50 mg/dL in female
  5. Fasting glucose ≥ 100mg/dL

Exclusion Criteria:

• Presently or planning for pregnant/breastfeeding during the study. Or confirmed pregnancy by a urine test.
• Currently taking medication (including insulin injection) for hypertension, dyslipidemia, or diabetes.
• Presently using a mobile application for lifestyle modification

A designated researcher will be responsible for the random allocation and mask the results, so the investigators and the outcomes assessor do know the which group the participants are been allocated in.