Serpent (symbolism) The serpent, or snake, is one of the oldest and most widespread mythological symbols. The word is derived from Latin serpens, a crawling animal or snake. Snakes have been associated with some of the oldest rituals known to humankind and represent dual expression of good and evil.
1 Osteoporosis, a condition characterized by reduced bone mineral density and increased bone fragility.  Rickets, a childhood disease characterized by impeded growth and deformity of the long bones. The earliest sign of subclinical vitamin D deficiency is craniotabes, abnormal softening or thinning of the skull.
The symptoms of vitamin D deficiency can vary amongst individuals, depending on presence of any complications, such as bone fracture, the severity of vitamin D deficiency, and other factors. Many people have no symptoms of vitamin D deficiency until complications are present. Symptoms may also be mild. Symptoms of vitamin D deficiency include bone pain, stooped posture, muscle cramps, weakness and tingling, and a loss of height. Having very pale skin may indicate that a person is at risk for vitamin D deficiency as well as for other disorders, diseases and conditions.