Jackie Giannelli Ramseyer on Instagram: "Right now, peptides and “stacking” are having a moment. And while I love that people are curious about their health, here’s the part that makes me nervous as a clinician: Longevity medicine is not a choose-your-own-adventure. Peptides are signaling molecules. They don’t just “boost energy” or “grow hair” in isolation. They interact with your immune system, hormones, metabolism, and mitochondria. When you stack them without understanding why you’re using t