Because we tend to spend less time in the sun in the winter, it’s common to be warned that we may not be getting enough vitamin D. And there’s a reason we need that D: A lack of it can make us feel tired, so much so that we may want to hibernate for the season. It also affects our immune system and mood.
According to research, it could take about two hours’ worth of afternoon sun exposure, if not more, for the skin to produce enough vitamin D in the winter, when accounting for the types of clothing typically worn during the season. But prolonged sun exposure can put us at risk of skin cancer, and spending hours outside in the cold isn’t exactly fun. READ MORE