A British charity organization has recommended that people should spend at least a few minutes every day in the sun

While doctors do recommend supplements for those who have low levels of vitamin D, Arthritis Research UK said that people can get their daily dose of vitamin D by spending just a few minutes outdoors.
Warning that people should also avoid the risk of overexposure, the organization’s medical director Alan Silman said, “When the days are sunny, go out for a few minutes and expose your face and arms to the sunshine. Don't allow your skin to go red, and take care not to burn, particularly in strong sunshine and if you have fair or sensitive skin.”
Source-Medindia