During the winter months, the UK government advises all adults to take vitamin D supplements daily, as the sun is not strong enough for the body to produce vitamin D. This indicates that even spending time outdoors in winter is insufficient for obtaining the necessary vitamin D, which is vital for regulating the amount of calcium and phosphate in the body. These elements are essential for maintaining the health of bones, teeth, and muscles. According to a report by the British newspaper "Express," there are two warning signs that may indicate a vitamin D deficiency: bone pain and weak bones. Increasing research now suggests that vitamin D is important in protecting against a range of health problems, including reducing the risk of death from cardiovascular diseases, decreasing cognitive decline in the elderly, and lowering severe asthma in children, along with many other health benefits.