“The best protein is the one that you actually chew and have with your meals.” Dr. Frank Agullo on how much protein most adults need, who needs more, the cheapest proteins in the store as supplement prices climb, and the one bag in the baking aisle that beats most whey tubs.

MDLinx asked Dr. Frank Agullo what happens when do-it-yourself peptide injections land patients in the clinic. His answer starts with a request: bring me the vial. Here is what he looks for on the label, why a “research use only” stamp means nothing, how a pharmacy-compounded product differs from a gray-market one, the stacks he is seeing in El Paso, one anonymized abscess case, and the 24-hour versus day-five rule for an injection site.

Keep your waist to less than half your height. Dr. Agullo on why that number is more useful than BMI, how to measure it at home, and the four habits that move it.

Peptides are easy to buy online and hard to do correctly. Dr. Agullo walks through what the first visit covers, what labs come before the first dose, and why some protocols run for years while others stop at eight weeks.

Twenty-three trials, 1,474 people, and one uncomfortable pattern in who funded them. What collagen actually does, and why the chips do not count.

Insulin is a peptide. So is your serum. So is that vial from an overseas site. Dr. Agullo explains what peptides actually are and which ones are worth it.

Inside the peptide wellness program at Southwest Plastic Surgery: how Dr. Frank Agullo uses NAD plus and GHK-Cu as a quiet, evidence-led answer to aging.