My first fearured post of the year brothers and sisters, i love you all very much. Vitamin D deficiency can result from inadequate exposure to sunlight, malabsorption, accelerated catabolism from certain medications, and, in infants, the minimal amount of vitamin D found in breast milk. In children, vitamin D deficiency can result in rickets, which presents as bowing of the legs; in adults, it results in osteomalacia, which presents as a poorly mineralized skeletal matrix. These adults can experience chronic muscle aches and pains. [1] (See the images below.)