Is sunlight medicine—or melanoma waiting to happen?

Dr. Alexis Cowan, Princeton‑trained molecular biologist and Chief Science Officer at Japa Health, shines a clarifying beam on the myths and miracles of light.

In this illuminating conversation with Sina and Joel, she reveals the body’s surprising capacity to manufacture its own vitamin D even in darkness, explains why the entire solar spectrum—not just UVB—fuels optimal health, and shares jaw‑dropping stories of people who reversed stubborn ailments with strategic sun exposure alone.

Together they dismantle the “sun equals skin cancer” narrative, explore whether sunglasses and desk‑bound lifestyles are actually upping our skin cancer risk, and weigh the pros and cons of popping vitamin D and melatonin supplements.

From reversing disease to improving sleep and slowing down aging, they discuss it all!

This week’s Community Question:

“How much time do you spend in the sun each day? Track your sun exposure for one day.”

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