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.
Symptoms of Vitamin D Deficiency. Vitamin D isnât an optional nutrient, our bodies need it, and without it, problems can arise. Many people go through life with nagging aches and pains, allergies, malaise, and a general lack of vitality. Such nonspecific symptoms can be the result of one, or several factors, and vitamin D deficiency is one of them. Specific symptoms related to vitamin D deficiency include:  Muscle weakness. Joint aches and discomfort. High blood pressure. Inability to concentrate or focus. Urinary incontinence, bladder issues. Constipation. Headaches.