FGF21 Hindbrain Neurons Controlled Protein Hunger in Mice
TL;DR: A 2026 Cell Reports mouse study found FGF21, a liver hormone released during protein restriction, acts on hindbrain neurons to change protein seeking, food choice, and energy use. Key Findings NTS-KLB neurons were required and could recreate the response: Removing these hindbrain neurons blocked food-intake, food-choice, and energy-expenditure changes during protein restriction. Activating them …
