Arginine Supplement and Alzheimer's: $10 Amino Acid Reduces Brain Amyloid in New Study

# Arginine Supplement and Alzheimer's: $10 Amino Acid Reduces Brain Amyloid in New Study

> **Quick answer:** A peer-reviewed study published in *Neurochemistry International* by Kindai University researchers found that oral arginine reduced amyloid-beta plaques, lowered neuroinflammation, and improved behavior in two animal models of Alzheimer's disease. The amino acid — already sold over the counter for under $10/month — acts as a chemical chaperone to prevent the toxic protein clumping that drives Alzheimer's. Human clinical trials have not yet been conducted.

*This article is for informational purposes only and does not replace professional medical advice. Consult a healthcare provider before beginning any supplement regimen, especially if you have a personal or family history of Alzheimer's disease or related conditions.*

The arginine supplement and Alzheimer's connection is getting fresh attention in May 2026 — and for good reason. While pharmaceutical companies have spent billions developing amyloid-clearing drugs, a research team in Osaka found that a naturally occurring amino acid most people have never considered may quietly block the same destructive process for pocket change.

## What the Kindai University Study Found

Published in *Neurochemistry International* (Volume 191, DOI: 10.1016/j.neuint.2025.106082), the research was led by Professor Yoshitaka Nagai of the Department of Neurology, Graduate Student Kanako Fujii, and Associate Professor Toshihide Takeuchi of the Life Science Research Institute at Kindai University in Osaka, Japan.