How medical marijuana affects older adults over time

Real-Time and Long-Term Effects of Medical Marijuana on Older Adults: A Prospective Cohort Study

NIH-funded research University of Florida · NIH-11237969

This project follows older adults who use medical marijuana to see how it changes their pain, mood, thinking, daily functioning, and side effects using phone-based reports and clinic visits.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionUniversity of Florida NIH-funded
Lab location1 site (Gainesville, United States)
Project IDNIH-11237969 on NIH RePORTER

What this research studies

You would report symptoms and medication use through smartphone-based real-time surveys while also attending several in-person clinic visits over 12 months. Researchers will collect clinical measures and blood samples to measure telomere length as a marker of cellular aging. The team will track pain intensity, physical function, emotional and cognitive functioning, quality of life, and side effects. They will also look at whether effects differ by sex, baseline pain features, and expectations about marijuana.

Who could benefit from this research

Good fit: Older adults with chronic pain who are using or considering medical marijuana and who can use a smartphone and attend clinic visits are the ideal candidates.

Not a fit: Younger people, individuals not using medical marijuana, or those unable to complete phone surveys or travel for in-person visits may not directly benefit from participation.

Why it matters

Potential benefit: If successful, this work could help patients and clinicians make more informed choices about medical marijuana use and identify potential benefits and risks for older adults.

How similar studies have performed: Some short-term studies show effects of medical marijuana on pain and mood, but real-time phone tracking combined with telomere biomarkers in older adults is largely new.

Where this research is happening

Gainesville, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.