Vitamin D from Sunlight

The ultraviolet radiation from sunlight gives energy to the cholesterol on the skin which helps it produce Vitamin D. UV Radiation is important.

Toxicity levels

50k-100k IU/week?
60k IU/day for several months?

10k+ IU/day?

Safe = 600 IU? 10k IU?

D3?

100 mg = 4000 IU?

By age?

4000 IU is safe UL (Upper Limit)
But 10000 IU is not shown to cause toxicity

Sun exposure on a sunny day = 10000 IU

Recommended Daily dose of adults (600 IU)
50 or older (800 - 1000 IU/day)