Skip the supplement aisle.
Five numbers predict how long you live, and how well, better than almost anything else your doctor measures. Four are on a standard lab slip. One you can do at home tonight with a tape measure.
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Who am I?
Dr. Sean Hashmi is a board-certified nephrologist and obesity medicine specialist who founded SELFPrinciple.org, a 501(c)(3) nonprofit translating peer-reviewed research into clear, actionable health guidance. His work reaches patients on YouTube, Instagram, and the SELF Principle podcast. Every recommendation in this guide is anchored in current evidence and the largest longevity cohort studies (Cleveland Clinic, PURE, PREDIMED, Harvard Study of Adult Development).
What will you learn?
- The single strongest predictor of all-cause mortality
- A 60-second test that beats blood pressure for predicting death
- The cholesterol number your doctor probably isn't ordering
- The blood sugar threshold under "normal" that still ages you
- Where to not spend your money in the longevity aisle
- Three specific things to do this month
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