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NUTRIDOM VITAMIN D3 + K2, D3 EDITORIAL Research into vitamin D3 and K2 has increased in recent years and specifically their synergistic relationship to skeletal and cardiovascular health has caught the attention of health professionals. Vitamin D can be obtained in the diet, but it is most commonly known to be made in the skin when exposed to sunlight. There are two forms of vitamin D, vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol), of which the D3 form is generally accepted to be the more bioavailable form of the two and thus is the form you should look for in a supplement. Deficiency in vitamin D has become more common as the evidence of sun damage and skin cancer has resulted in people limiting their skins exposure to the sun. In northern climates where long cold winters keep people inside and covered up, deficiency is even more common. A recent US study reported deficiency rates of 41.6%-86% in a study of over 4000 individuals. The importance of vitamin D in bone...