Do You Need Vitamin D in Winter?
As autumn settles in and daylight becomes increasingly scarce, our daily routines begin to change. We spend more time indoors, mornings become darker, and the opportunity to enjoy natural sunlight gradually diminishes. But there's another seasonal change worth understanding: the way our bodies produce vitamin D. Unlike most vitamins, vitamin D can be produced naturally by the skin when exposed to sufficient ultraviolet B (UVB) sunlight. During the British winter, however, this process becomes...