• Rickets is the disease of softening of bones and is generally observed in children making the bones more susceptible to deformity and fracture. The predominant cause of the disease is the deficiency of vitamin D in the body which is a crucial component for calcium absorption. This disorder can also affect the adults because of severe malnutrition and starvation. The same condition in elder people is known as osteomalacia. Deficiency of calcium in the body can be diagnosed with the help of tests. A lot of Vitamin D should be taken in diet to promote calcium absorption. Ultraviolet light therapy has also proved useful in curing this disease.