"Longevity" sells everything from supplements to cryo-chambers. Underneath the marketing there is a real and fairly conservative discipline: preventive medicine focused on healthspan, the number of years lived in good health, rather than lifespan alone.
What does a longevity programme actually do?
The credible ones start with diagnostics — bloodwork, cardiovascular and metabolic markers, body composition, sometimes imaging — to find modifiable risks early. Then they intervene on the things that have the strongest evidence: blood pressure and lipids, glucose regulation, sleep, muscle mass, and physical activity. Then they measure again. The unglamorous parts do most of the work.
Is any of it proven?
The fundamentals are: managing cardiovascular and metabolic risk, staying strong and active, and sleeping well are among the best-supported interventions in all of medicine. The frontier — senolytics, certain peptides, aggressive supplementation — is far less certain, and a good clinic is honest about which is which.
How do I tell a clinic from a spa?
Look for real diagnostics, physicians on staff, and outcomes framed as risk reduction rather than promises. A programme that leads with a signature "detox" and vague talk of toxins, but cannot tell you what it measures or why, is selling an experience, not medicine.
Is this medical advice?
No. This is background for choosing where to look. Any programme that changes your medication, diet or training should involve your own doctor — especially if you have a chronic condition.