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Nutritional Intervention for Constipation Symptoms in Patients With Parkinson's Disease

NCT07213856 · Status: NOT_YET_RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 54

Last updated 2025-10-09

No results posted yet for this study

Summary

The goal of this clinical trial is to evaluate whether a dietitian-guided nutritional intervention can improve constipation symptoms in people with Parkinson's disease (PD). The main questions it aims to answer are:

* Can a dietitian-guided nutritional intervention increase the number of weekly bowel movements in individuals with PD and functional constipation?
* Can this intervention positively influence gut microbiota composition, dietary intake, and nutritional status?

Researchers will compare the intervention group to a control group that will receive general dietary guidance only after the study period, to see if the intervention leads to improvements in bowel function and related health outcomes.

Participants will:

* Follow a diet plan developed by a dietitian, based on dietary reference intakes and tailored to the needs of individuals with PD and constipation
* Participate in follow-up sessions with the dietitian for 3 months
* Complete assessments at baseline, midpoint, and end of the intervention to evaluate bowel function, constipation symptoms, gut microbiota, nutritional status, and diet quality

Conditions

  • Parkinsons Disease (PD)
  • Constipation - Functional

Interventions

BEHAVIORAL

Dietitian-Guided Nutritional Intervention

Participants receive a diet plan and nutritional counseling provided by a registered dietitian, based on a standardized protocol aligned with the Dietary Reference Intakes (DRIs) and adapted for the management of Parkinson's disease and constipation. The intervention includes follow-ups with the dietitian over a 3-month period.

Sponsors & Collaborators

  • Hospital de Clinicas de Porto Alegre

    lead OTHER

Principal Investigators

  • Maira Rozenfeld Olchik, PhD · Federal University of Rio Grande do Sul

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-10-31
Primary Completion
2027-06-30
Completion
2029-08-31

Countries

  • Brazil

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07213856 on ClinicalTrials.gov