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 are easy to miss. While they vary from person to person, the following is a list of symptoms that seniors with this deficiency may experience: 1  Fatigue. 2  General muscle pain and weakness. 3  Muscle cramps. 4  Joint pain. 5  Chronic pain. 6  Weight gain. 7  High blood pressure.