We had (gasp) sun this weekend and I sat out for 2 1/2 hour sessions, unsure if the sun was strong enough to do anything, but hoping that it did. It's amazing that "science" declared the sun unhealthy for a few years. Admittedly, I bought it. Being sunburned in 15 minutes and wanting to avoid wrinkles, I kept out of the sun. But now I soak it up like medicine. Same with fish oil, actually. Remember when fat was bad?