Why sunshine may protect you—and why red light therapy might do the opposite
For decades, we’ve been told a simple story:
Sunlight causes cancer.
Avoid it. Block it. Fear it.
And yet, when you look closely at the biology—and the clinical data—the story becomes far more complicated.
In fact, in many patients with cancer, complete avoidance of sunlight may be doing more harm than good.
The Paradox of Sunlight
Sunlight is not just radiation.
It is a biological signal—one that regulates multiple systems critical to cancer control:
Vitamin D metabolism
Immune function
Circadian rhythm
Mitochondrial signaling
At the center of this is vitamin D, a hormone—not a vitamin—that exerts profound anti-cancer effects.
Full text:
https://paulmarik.substack.com/p/sunlight-medicine-or-carcinogen?publication_id=5737269&utm_campaign=email-post-title&r=y7h5a&utm_medium=email
