Animal models suggest Alzheimer’s disease begins in your gut years before memory loss appears, which means early digestive symptoms like constipation may be a warning sign you can act on now Amyloid-beta builds up in your gut first, damages nerve signaling there, and then spreads to your brain, linking gut health directly to cognitive decline Research suggests butyrate, a compound your gut bacteria produce, blocks amyloid buildup, reduces inflammation, and preserves memory when your gut...