Efficacy and Safety of Weak Extremely Low Frequency Electromagnetic Fields in Mild and Moderate Essential Hypertension

Randomized Placebo-Controlled Trial of Efficacy and Safety of Weak Extremely Low Frequency Electromagnetic Field in Mild and Moderate Essential Hypertension

This study will evaluate the efficacy and safety of weak extremely low frequency electromagnetic fields (ELF-EMF) in mild and moderate essential hypertension.

Inclusion Criteria:

• Ages: 20 years to 74 years
• Genders : Both
• The severity of hypertension: mild and moderate (WHO/ISH criteria stage I-II) Systolic blood pressure (SBP) >/= 140 and/or diastolic blood pressure (DBP)>/= 90 (untreated hypertension cases)

Exclusion Criteria:

• Any of the following medical conditions:
• Severe essential hypertension (DBP >110)
• Secondary or malignant hypertension
• History or symptoms of cerebral vascular disease
• History of myocardial infarction
• History of angina pectoris, atrial fibrillation, heart failure and arrhythmia
• Renal dysfunction (serum creatinine > 2.1mg/dl)
• Severe hepatic dysfunction
• Uncontrolled diabetes
• Allergy, drug sensitivity or chronic skin disease
• Peptic ulcer disease
• Current pregnancy or lactation
• Depression that needs to be treated
• Hypertension controlled with antihypertensive medication