How to Measure Your Basal Metabolic Rate

Filed Under: General Health

woman looking at thermometer

Learn about this at-home method for checking proper thyroid function

One of the simplest and most accurate methods to check for proper thyroid function was discovered by Dr. Broda Barnes. Using his method, you can take your temperature and get a good idea of your basal metabolic rate and thyroid condition.

What You Need

  • An oral thermometer

How to Take the Test

  1. Shake the thermometer down before going to bed. Place it beside your bed.
  2. Immediately upon waking the next morning, place the thermometer in your armpit for 10 minutes. Do NOT get out of bed. Relax and remain still during the test.
  3. Record the temperature.

Men and premenstrual and perimenopausal women can take their temperatures on any day of the month. Women in their menstrual years get the most accurate reading on the second or third day after menstrual flow starts.

Interpreting Your Results

  • Normal: 97.2–98.2 degrees
  • Below 97.2 degrees usually indicates a sluggish or hypothyroid condition
  • Above 98.2 degrees usually indicates an overactive or hyperthyroid condition

More Dr. Williams Advice on Overall Wellness

DISCLAIMER: The content of is offered on an informational basis only, and is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified health provider before making any adjustment to a medication or treatment you are currently using, and/or starting any new medication or treatment. All recommendations are "generally informational" and not specifically applicable to any individual's medical problems, concerns and/or needs.

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