Rickets, called vitamin D-deficiency rickets, is caused by a lack of vitamin D which leads to abnormal calcium and phosphorus metabolism in the body. This prevents calcium salts from properly depositing in the growing parts of the skeleton, resulting in incomplete mineralization of bone tissue during growth. It produces a systemic, chronic nutritional disease characterized by skeletal lesions and closely related to lifestyle. The primary causes of rickets are due to a combination of factors leading to vitamin D deficiency. Feeding methods, cod liver oil supplementation, living environment, time spent outdoors, recurrent respiratory infections, maternal calcium deficiency during pregnancy, and the season of birth are all significant contributing factors to the incidence of rickets. Generally, most cases of rickets are not inherited to the next generation. However, if there is a clear hereditary disease causing insufficient levels of vitamin D, it could potentially be inherited by the next generation.