In the review, Measuring Breath Acetone for Monitoring Fat Loss, Joe Anderson Ph.D. mentions the following key points in connection with acetone breath measurement and weight loss:

  • As a byproduct of fat metabolism, acetone in blood and breath is known to increase with caloric restriction as stored fat is mobilized to meet energy demands (instead of using carbohydrates). Therefore, stored fat is utilized to meet energy demands helping people achieve fat loss goals.
  • Consumption of carbohydrates within the hours before exercise significantly decreased fat burn during exercise over a wide range of exercise intensities. A high carbohydrate snack just prior to exercise prevented the onset of post-exercise fat burn.
  • In multiple studies, breath acetone increased twofold at the end compared to the beginning of exercise therefore signifying an increase in fat burn with continued exercise.
  • Exercise can affect day-to-day measurements of breath acetone. Subjects submitting to caloric restriction and daily exercise had greater daily breath acetone levels than caloric restriction alone.
  • Measurement of acetone in breath requires both a well-controlled breath sample and an accurate and reliable measurement device. LEVL is excited to bring this technology to your home in 2016.
  • Maintaining a 2 ppm (parts per million) breath acetone concentration while on a calorie restriction diet should cause a fat loss rate of ½ lb per week.

For more information, the full review can be found in Obesity – A Research Journal.