Joe Rogan Experience #1474 - Dr. Rhonda Patrick

Observational data from places like Indonesia, the Philippines, New Orleans, and Sweden show that most patients who die of COVID-19 are vitamin D deficient; randomized trials outside COVID already show vitamin D supplementation reduces respiratory infections, especially in people starting with low levels.

UVB exposure on skin is the best source, but modern indoor lifestyles, high latitudes, darker skin, and obesity all impair vitamin D status; Patrick commonly uses ~4,000–5,000 IU/day but emphasizes individual blood testing, avoiding megadoses long‑term, and pairing D with vitamin K1/K2 to manage calcium.

Chronic infections like CMV reshape T‑cell populations differently in young versus old, and some common cold beta‑coronaviruses may generate antibodies that cross‑react with SARS‑like viruses, potentially contributing to asymptomatic or milder cases in some groups.

For vitamin C, low doses (e.g., 200 mg) barely raise plasma levels, whereas ~3 g/day split across doses can meaningfully increase levels and modestly shorten colds; IV vitamin C reaches 70x higher levels and behaves more like a pharmacologic therapy. Zinc lozenges (especially acetate/gluconate) can reduce cold duration but need adequate dosing and often work better with ionophores like quercetin.

Finnish data show frequent sauna use (4–7x/week) is associated with 40–50% lower all‑cause and cardiovascular mortality and less pneumonia; heat raises core temperature, heart rate, and heat‑shock proteins, improving vascular function, mood (possibly via BDNF), and potentially reducing muscle atrophy and respiratory complications.