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A quick piece in Bloomberg asked whether the trending anti-aging injections people are paying for — things like NAD and various peptides — actually do what clinics promise. The story looks at a booming industry where wellness shops offer shots and infusions that claim to fight aging, boost energy, or improve mood. The short answer is that the evidence is weak or mixed, and much of what’s sold is ahead of what science has proven. NAD (nicotinamide adenine dinucleotide) is a molecule your cells use to help turn food into energy and to repair DNA. Levels of NAD fall as people get older, and some researchers think boosting it might help cells stay healthier. “Peptides” are short chains of amino acids — basically tiny pieces of proteins — that can act like signals in the body. Some peptides used in clinics are designed to mimic natural molecules that affect hormones, skin repair, or inflammation. But calling something a peptide doesn’t mean it’s a proven medicine; it just describes its chemical type. What the research actually shows varies a lot. Most strong data come from lab studies or animal tests, which can suggest possible benefits but don’t guarantee the same effects in people. Human trials for many NAD supplements and peptide injections are small, short, or have mixed results. Some studies show modest improvements in specific lab measures or symptoms, while others show no clear benefit. Large, long-term clinical trials that would be needed to prove meaningful anti-aging effects in everyday people are mostly missing. Why this matters is practical. People who are tired, worried about aging, or looking for an edge may be tempted to try these therapies. If something truly helped slow aging or prevent disease, it would be a big deal. But without solid human evidence, many consumers are paying for treatments that may not work and might distract from proven steps like exercise, good sleep, healthy food, and managing chronic conditions. For people with money to spend, these therapies can feel hopeful, but hope is not the same as proof. There are real caveats and risks. Because many clinics operate in a gray area, products can vary in quality and purity. Injecting substances carries infection and other procedural risks. Some peptides or high-dose supplements can affect hormones or interact with medications. Regulatory oversight is uneven: some products are approved drugs for specific uses, but many are marketed off-label or as supplements without thorough testing for anti-aging claims. People who are pregnant, have immune problems, or are on other medications should be cautious and talk to a licensed clinician. Bottom line: NAD and peptide injections are interesting and may have promise, but current human evidence is limited; think of them as experimental rather than proven anti-aging fixes.
Source: Bloomberg.com