I stopped taking painkillers in 2020. Tracing the evidence taught me the occasional pill was never the problem — but paracetamol's safety…
John Lock
August 13, 2026
An honest N=1 look at how my HRV rose from a 32 ms baseline to around 40 — what moved it, what…
John Lock
August 11, 2026
Peer-reviewed HRV reference values by age and sex, with the studies and methods attached — and why your wearable's number won't match…
John Lock
August 11, 2026
I was severely deficient in vitamin D and wanted it fixed fast. Here is what actually drives absorption, and how I sailed…
John Lock
August 5, 2026
Are seed oils really toxic? A look at the peer-reviewed evidence on oxidation, omega-6 ratios, ultra-processed food, and GMO soy — and…
John Lock
June 5, 2026
Not all artificial sweeteners are the same. Here's what recent research says about the dangers of fake sugars — cancer, heart, and…
Pablo Vicento
August 15, 2023
