Muscle Protein Cathepsin B May Help Shield the Brain From Alzheimer’s

A Florida Atlantic University study shows boosting the muscle-derived protein Cathepsin B in mice with Alzheimer’s preserves memory and brain cell growth, even without reducing amyloid plaques, suggesting muscle signaling to the brain could be a new avenue for neurodegenerative therapies—though benefits did not extend to healthy mice and human relevance remains to be proven.