Max Gulhane
Australian family medicine physician and health-optimizing doctor, GP registrar, and host of the Regenerative Health Podcast focused on circadian biology and metabolic health.
1
APPEARANCES
1
PODCASTS
Jun 8, 2026
Jonathan JareckiHOST
So if you if you could sort of start start us there to to get started here.
Max GulhaneGUEST
Yeah, ultraviolet, I mean, like the definition or the words explain what it is.
Max GulhaneGUEST
I mean, violet, violet light getting at the edge of what's perceptible, it's below that.
Max GulhaneGUEST
And if we think about like the spectrum, it's between... ultraviolet itself sits between about 280 nanometers and it goes all the way up to 400.
Max GulhaneGUEST
And UVB, which is the most shortest wavelength and the most high energy photon goes to about 350, maybe 320 nanometers.
Max GulhaneGUEST
And that is the, you mentioned vitamin D, that is what people most associate, kind of maybe it's the most well-known photochemical reaction in the body.
Max GulhaneGUEST
And it essentially involves one of these photons having enough energy to be able to break open the cholesterol ring.
39 MINS LATER