You can get vitamin D from sunlight exposure. For white people, this doesn’t take long, probably minutes (around noon) of direct exposure on your face and arms. If your skin is darker, it takes longer. You have to expose more skin for longer periods. Black people maybe can’t get enough at high latitude and will have to take the pills. If you’re supplementing this way, you do have to actually step outside for a bit. Exposure through windows that block UV is not going to work. Obviously, sunscreen will prevent some exposure.
If you get a sunburn, you waited too long. You have to factor in season, latitude, time of day, and skin tone. There’s an app called dminder that can help you time it so you don’t get the sunburn.
You can get vitamin D from sunlight exposure. For white people, this doesn’t take long, probably minutes (around noon) of direct exposure on your face and arms. If your skin is darker, it takes longer. You have to expose more skin for longer periods. Black people maybe can’t get enough at high latitude and will have to take the pills. If you’re supplementing this way, you do have to actually step outside for a bit. Exposure through windows that block UV is not going to work. Obviously, sunscreen will prevent some exposure.
If you get a sunburn, you waited too long. You have to factor in season, latitude, time of day, and skin tone. There’s an app called dminder that can help you time it so you don’t get the sunburn.