In keeping with the latest viral TikTok trends, I couldn’t help but notice the surge of content tagged with #peptides. This isn’t simply encouragement to eat more protein-rich foods like meat, fish, or eggs. Instead, the conversation has shifted toward pills, powders, tinctures, and even injections of various peptides, many of which were never covered in my dietetics training. Naturally, that raised questions. If we’re not talking about the peptides that come from whole foods, what exactly are people taking? I dug into the literature to better understand what peptides are, how they’re being used, and what we actually know…