How much time do I need to spend outside to get enough vitamin D?
How much time do I need to spend outside to get enough vitamin D?
user
Most people will get enough vitamin D from spending half an hour in the sun each day. If you spend an hour outside, it’s a safe bet that you’ll have the right amount.
assistant
Do you have to be in direct sunlight to get vitamin D?
user
You don’t need to have direct sunlight on your skin for vitamin D synthesis. But it does need a minimum amount of time in the sun for the skin to get enough sunlight to make the vitamin.
assistant
What I mean is, do you still make vitamin D if you're out on a very sunny day but in the shade or it's cloudy or whatever?
user
Yeah, so that’s a bit of a tricky question.   You could technically get enough sunlight by being in the shade and covered by an umbrella or something similar.  This is called “photoprotection”.  It’s also possible to make enough vitamin D from artificial light (for example, sun lamps).
assistant
What about if I sit at home with a window facing the sun?
user