[zerealshadowban]

Consider a one-week trip to Hawaii in the darkest time of winter; supplementation studies have shown that the body can safely absorb and store 100K IU, that it takes about 2 months to deplete such an amount. Your skin produces 20k IU in 30 minutes on a sunny day at the beach (wearing a swimsuit). If you're in the PNW (or central Europe at the Southern German border) your skin cannot produce vitD from October through April because of how low the sun is in the sky even at its zenith.

[cwbriscoe]

I definitely should do more sunny trips in the fall/winter. I am going to try tanning in a UVB bed a couple times a week during the bad months this year. I have heard that it has helped some people.