# Probiotic and Dietary Supplements Intervention in Age-Related Neurodegenerative Disorders

## TL;DR

This review explores how probiotics and dietary supplements may help improve brain function in older adults with neurodegenerative disorders.

## Contribution

The paper highlights the novel potential of probiotics and dietary supplements as safe and effective early-stage interventions for age-related neurodegeneration.

## Key findings

- Probiotics and dietary supplements show modest cognitive benefits in elderly patients.
- Benefits may stem from gut microbiota, immune signaling, and neuroprotective pathways.
- Early-stage treatment yields more noticeable improvements in brain function.

## Abstract

Age-related neurodegenerative disorders, including Alzheimer’s disease, Parkinson’s disease, and mild cognitive impairment, represent a growing global health challenge. The present medicines offer only symptomatic alleviation with poor disease-modifying efficacy. Increasing data suggests that the gut–brain axis and dietary health are measurable contributions to cognitive impairment as we age. This review first focused on the mechanistic link between gut dysbiosis and neurodegeneration. Furthermore, the review discusses preclinical and clinical research that show how probiotics and dietary supplements improve brain function in the elderly using supplemental therapy methods. It also indicates that randomized clinical studies and meta-analyses suggest that probiotics and particular nutritional supplements provide modest but consistent cognitive advantages, which are most noticeable when patients receive therapy at the initial stage of their disease development. These advantages might originate from the combined impact of gut microbiota, immunological signaling, and neuroprotective pathways, rather than specific targeted approaches. Thus, the current review highlights the reports, suggesting that probiotics and dietary supplements might be effective and safe therapies for age-related neurodegeneration.