Microtesla extremely low frequency magnetic fields may ameliorate hypertension

Area of Science:

• Biophysics
• Cardiovascular Physiology
• Electromagnetic Medicine

Background:

• Blood pressure regulation is crucial for cardiovascular health.
• Extremely low frequency magnetic fields (ELFMF) are ubiquitous and their biological effects are under investigation.
• Previous research suggests potential non-thermal biological effects of ELFMF.

Purpose of the Study:

• To investigate the effects of a micro-Tesla extremely low frequency magnetic field (microT ELFMF) on human blood pressure.
• To determine if ELFMF exposure has a hypotensive effect, particularly in individuals with hypertension.

Main Methods:

• Thirty volunteers were exposed to a 1-muT, 8/6-Hz alternating current magnetic field generated by Helmholtz coils.
• Blood pressure was measured at baseline, and at 1, 2, and 3 months post-exposure.
• Systolic blood pressure (SBP) changes were analyzed in hypertensive and normotensive subgroups.

Main Results:

• A statistically significant decrease in pre-exposure SBP was observed at 3 months in both hypertensive (p<0.001) and normotensive (p=0.013) subgroups.
• The hypertensive subgroup exhibited a greater reduction in SBP compared to the normotensive subgroup.
• The median number of sessions was 31.5, with a median duration of 10 minutes per session.

Conclusions:

• Micro-Tesla ELFMF exposure may possess a hypotensive effect.
• The hypotensive effect appears more pronounced in individuals with hypertension.
• Further research is warranted to elucidate the mechanisms and clinical applicability of ELFMF for blood pressure management.