100 Is the New 30

Interventional cardiologist Jeffrey Gladden brings genuine clinical credentials to the longevity conversation, and his framework — targeting life energy, the hallmarks of aging, health optimization, and performance — is more comprehensive than most popular longevity books attempt. The central claim, that biological and chronological age can diverge dramatically with the right interventions, is plausible and backed by real science. The honest caveat is that Gladden's ambitions outrun the current evidence in places, and the proprietary branding — 'Age Hacker,' 'Symphony of Longevity' — leans harder into marketing than the science warrants. No major peer-reviewed or independent critical reviews have evaluated the specific claims. Read it as a motivated, credentialed clinician's vision of what may be possible, cross-check the bolder claims independently, and you will find genuinely useful material here.