Cancer ScreeningMar 22, 2026
The Galleri test screens for signals from over 50 types of cancer using a single blood draw. It works by analyzing cell-free DNA methylation patterns, and the clinical data behind it is both genuinely promising and genuinely limited. The CCGA validation study showed 99.5% specificity and the ability to predict where a cancer signal originates with 88.7% accuracy. But sensitivity for Stage I cancers was just 16.8%, meaning the test misses most cancers at their earliest, most treatable point. If you're considering spending $849 on this test, you deserve a clear picture of what the science actually shows.
Blood TestingMar 21, 2026
Most annual physicals include a basic metabolic panel and a complete blood count. These tests cover electrolytes, kidney function, liver enzymes, and blood cell counts. They are useful for detecting acute illness and organ dysfunction. But they tell you almost nothing about cardiovascular risk, metabolic health, thyroid function, inflammation, or vitamin status. For anyone who wants to catch problems early, rather than after symptoms develop, standard panels leave too much unmeasured.
LongevityMar 21, 2026
Your birth certificate says one thing. Your cells might say something different. Biological age tests analyze chemical tags on your DNA to estimate how quickly your body is aging relative to your chronological age. The field has evolved rapidly since the first epigenetic clocks were published in 2013, and the latest generation of tests can now predict disease risk and mortality with surprising accuracy. But the science is more nuanced than most longevity podcasts suggest, and understanding what these tests can and cannot tell you matters before you order one.
