By Dr. Sanchari Sinha Dutta, Ph.D. Reviewed by Lauren Hardaker Sep 15 2025 Scientists warn that while processed red meat may fuel harmful brain changes linked to Alzheimer’s, Parkinson’s, and ALS, the evidence is still evolving, and more studies are needed to uncover the actual risk. Study: Mini-review: Processed red meat intake and risk of neurodegenerative diseases . Image credit: Mehmet Cetin/Shutterstock.com A review article published in Frontiers in Nutrition provides a detailed overview