Health & Longevity - Senses
The five channels you experience the world through are also five readouts on the state of your nervous system. One predicts five-year mortality better than heart failure does. Another is the single largest modifiable risk factor for dementia. Two have treatments that work and are not being used.
Stem Cells
I fasted past 72 hours once. My back hurt the whole way through, and afterwards it felt like a different back. That sent me into the stem cell literature, where the real finding turned out to be stranger than the supplement ads: your repair crew does not fade slowly. It collapses at around seventy. And in the female body, one of the hormones maintaining it withdraws two decades earlier.
