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April 2026 : Linkedin Jonathan Webb
https://www.linkedin.com/posts/jonathanwebbli_this-dermatologist-has-226-publications-and-activity-7457066101844361216-II9Q
This dermatologist has 226 publications and is torching his own field
He’s saying dermatology got it WRONG. Sun avoidance is killing people
Why would someone with every professional incentive to keep telling you to wear SPF 50 be saying this publicly?
He says the data is too obvious to ignore A 25-year Swedish study of 29,500 women found that avoiding the sun carried the same mortality risk as smoking. And deaths weren’t from skin cancer. They were cardiovascular
Women with the lowest sun exposure had 60% higher cardiovascular mortality than those with the most 400,000 people in the UK Biobank confirmed the same findings. Higher UV exposure meant 19% lower cardiovascular death, 15% lower all-cause mortality
The reason behind it isn’t complicated: UV hits your skin –> releases nitric oxide into your bloodstream –> your arteries dilate –> blood pressure drops
A study of 342,000 dialysis patients showed UV lowers blood pressure independent of temperature entirely. 25% of the variance in global blood pressure is explained by latitude alone.
Blood pressure is 5-6 mmHg higher in winter which maps almost perfectly onto the 23% spike in cardiovascular mortality that winter brings every year “Alright I’ll just supplement Vitamin D then…..”
The two largest RCTs of vitamin D supplementation involving 30,000 combined participants found ZERO cardiovascular benefit.
A 2022 NEJM editorial said healthy people should stop taking it
Dermatology’s current advice: avoid the sun and take vitamin D supplements. One raises your cardiovascular risk. The other does nothing to fix it. Beautiful Rockeffeler business model
Cardiovascular disease kills 700k Americans a year.
Even a conservative 20% reduction from regular sun exposure saves 140k lives
Now take the other side. Imagine sun avoidance worked perfectly and eliminated every single skin cancer death. That’s 15k lives The medical establishment has been trading 140k lives to save 15k.
That’s net negative by nearly 10x.
Fear of skin cancer is killing more people through heart disease than skin cancer ever could. But centralized medicine isn’t talking about it because there’s no product to sell Sunlight is free. So the guidelines don’t move and people keep dying in the shade Fire your dermatologist, trash your vitamin D supplements, and get outside
