Our Body's Phase Angle? A Guide | El Paso, TX. Skip to main content

Our Body's Phase Angle? A Guide | El Paso, TX.


When it comes to body composition analysis and body composition testing, most tend to think about muscle mass and body fat percentages. However, today's medical BIA (bioelectrical impedance analysis) equipment does a lot more than that.

Body fat percentages are only a small part of a body composition analysis. For body composition equipment utilizing Direct Segmental Multi Frequency-BIA technology (DSM-BIA), means that you are able to measure and monitor other valuable indicators of your health such as visceral fat, body water, segmental readings, and phase angle values.

What’s Phase Angle?

  • Phase Angle or PhA allows us to see how the body is responding to changes in health - good or bad.
  • For example, people with cancer or who are malnourished have low PhA's.
  • PhA decreases with age. This is due to the body's slowed down capacity to repair cells quickly.
  • When ill, the Phase Angle goes down
  • When healthy the Phase Angle goes up.
  • When you boost your Phase Angle, aging slows down.

Solving The Riddle of Phase Angle

  • PhA is a direct measurement of cell integrity and the distribution of water inside and outside the cell membrane.

How Do You Measure Phase Angle?

phase angle guide el paso tx.
  • In healthy humans, the cell membrane is made of a layer of non-conductive (insulator) lipid material that's between two layers of conductive fluids (the body's water).
  • Two conducting materials that surround an insulator are often referred to as a capacitor.
  • The cell membrane is a fortress with capacitor capabilities that prevent currents from entering the cells and other unwanted materials, e.g., toxins and waste.
  • This means healthy cells/tough capacitors better prevent unwanted substances from entering.

In Bioelectrical Impedance Analysis (BIA)

  • PhA means the relationship between resistance and reactance.
  • This falls into lean body mass and body cell mass
  • Lean Body Mass (LBM) is the total weight of the body's organs, skin, bones, body H2O, and muscles.
  • Describes the entire body weight minus body fat.
  • Also referred to Fat-free mass.

Resistance/Reactance/Impedance

  • Resistance is when a conductor transfers the energy of an electric current.
  • Greater the conductor, lower the resistance.
  • Low resistance/associated with large LBM.
  • High resistance/associated with low LBM.
  • A person that has sizeable lean body mass has a lot of body water, which means greater conductivity of the current and less overall resistance.
  • Reactance measures the cells’ ability to store energy.
  • The body has high reactance if the cells can store energy easily and has low reactance if it saves energy poorly.
  • Healthy cells with healthy cellular membranes hold the electrical energy charge longer.
  • Impedance is the sum of resistance and reactance.
  • Measuring PhA and cell health can be done with a Bioelectrical impedance device, which assesses cell membrane health.
  • To measure impedance, a small alternating current is run into the body, which then measures the effects on the current caused by the body.
  • 50 KHz is considered ideal to maximize reactance and determine the point where the most potent cells resist the current.
  • As current travels through your body, the body's water will naturally resist the flow of the current and this is referred to as resistance.
  • When current encounters a cell, the cell wall causes a delay, as the voltage builds up, in order to pass through the cell wall while the current continues instantly.
  • This brief time delay, which is caused by the cells is compared to the amount of water, which provides us with a PhA.
  • Impedance is a combination of these two values.

Phase Angle and Overall Health

phase angle guide el paso tx.
Tracking your PhA, allows you to gain a more precise picture of your health, as it examines cell health/integrity and the amount of water inside.
  • Higher PhA values mean greater cellular integrity and reflect better cell health.
  • Low PhA, is predictive of decreased muscle strength, compromised quality of life, and increased mortality in older adults with cancer.
  • Low phase angles are consistent in individuals with malnutrition, HIV/AIDS, cancer, and chronic alcoholism.

How To Know If My PhA Is Normal?

Certain factors can influence PhA such as (Age, Gender, BMI) but there are differences in PhA's across different populations. Which means that PhA values tend to differ based on the BIA equipment being used.

Example of a Phase Angle Reading Utilizing The InBody 770:

What everyone needs to know is that phase angle depends on the individual makeup of everyone.

The Connection Between My Body's Composition & Phase Angle

  • Improving body composition helps increase phase angle.
  • Improving body composition through nutrition, exercise or both.

Lifestyle Factors That Can Impact Phase Angle are:

  • Exposure to toxins
  • Eating processed food
  • Not getting enough sleep
  • Stress of all types (Emotional, Physical, Mental)
  • Not enough exercise or physical activity
  • Excess of caffeine, alcohol, sugars
Phase Angle Increase May Result From:
  • Muscle mass gain
  • Inflammation reduction along with body fat reduction
Phase Angle Decrease May Result From:
  • Muscle tissue loss
  • Increased inflammation

Phase Angle In A Clinical Practice

A study, monitoring PhA values in a hospital setting found that it helped identify nutritionally at-risk patients quickly, thus saving the staff time, as the patients did not have to answer the in-depth nutritional questions. Instead, they took a quick BIA.

Phase Angle Takeaway


  • PhA values can be highly informative of what is going on in one's body.
  • PhA can help in identifying health risks/issues
  • Track lifestyle change progress
  • Medical Clinics can use PhA to help create custom treatment and health care plans

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