Bone health can deteriorate due to age, genetics, weight, diet and level of physical activity or injury. Key minerals and vitamins for healthy bones are Calcium, Magnesium, Vitamin D and Vitamin K, with Calcium and Vitamin D possibly most important. Calcium aids bone growth and development, and is obtained through dairy foods like yoghurt, milk and cheese. However, while our main source of Vitamin D is sunlight, it can also be found in oily fish and eggs too. With modern diets and a lack of sunlight, adults and children can be deficient in a number of essential bone nutrients, so a bone health supplement is a sure-and-simple way to a healthy skeleton.