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.
Weight gain, low bone density, fatigue, joint pain, and depression are surprisingly just a few symptoms of vitamin D deficiency. Long-term use of antiepileptic drugs (AEDs) is associated with vitamin D deficiency, even in sub-tropical countries, according to a study at the University of Malaya.