Phase angle and cellular health: inflammation and oxidative damage

Area of Science:

• Biomarkers
• Cellular Physiology
• Bioelectrical Impedance Analysis

Background:

• Phase angle is derived from resistance and reactance via bioelectrical impedance analysis (BIA).
• It reflects cellular integrity, hydration, and overall health.
• Inflammation and oxidative stress can compromise cellular structures, impacting phase angle.

Purpose of the Study:

• To review determinants of phase angle.
• To examine the relationship between phase angle and markers of inflammation and oxidative stress.
• To discuss phase angle's potential role in detecting chronic inflammation and adverse outcomes.

Main Methods:

• Literature review of studies on phase angle determinants.
• Analysis of correlations between phase angle and inflammatory markers (e.g., CRP, TNF-α, IL-6, IL-10).
• Assessment of phase angle's association with oxidative stress markers.

Main Results:

• Phase angle is influenced by age, sex, body composition (ECW/ICW ratio, FFM), and BMI.
• Lower phase angle is consistently correlated with elevated inflammatory markers across diverse populations.
• Preliminary data suggest phase angle may indicate oxidative damage.

Conclusions:

• Phase angle shows promise as a screening tool for inflammation and oxidative stress.
• Its clinical utility requires further validation with diverse populations and BIA devices.
• Phase angle may aid in identifying individuals at risk for chronic inflammatory conditions.