Study #3065: Dietary Optimization of the Gut-Muscle Axis in Older Adults

For more information about enrolling in this study, please call:

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Purpose of this study: To examine the ability of dietary fiber to improve muscle mass, muscle composition and physical function in older adults. 

Target population:
Independently living older adults, ages 65 years and older.

Major exclusions:        

  • BMI < 18.5 kg/m2
  • A history of any significant injury or surgery that current affects physical functioning and ability to perform physical function testing
  • Diabetes mellitus (type 1, or type 2 with insulin therapy)
  • Liver or kidney disease
  • Chronic use of anti-inflammatory medication (corticosteroids)
  • Won't remain in Boston for the 13-week study duration

Length of study:

  • 13 weeks


  • None

Time commitment/number of visits:

  • 1 screening and 3 study visits

Study diet:

  • Only consume the provided food (unsweetened tea and/or black coffee are allowed). 

Can I work?

  • Yes, but not on the mornings of visits 2, 3 or 4.


  • $20 for screening visit, and up to $558 if you qualify and complete the study. In addition, all food will be provided during the 13-week study, which has an equivalent cost of $2,300.