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.
A Dr. Michael T. Murray, ND , Naturopathic Medicine, answered. A deficiency of thiamine (vitamin B1) usually results in fatigue, depression, pins and needles sensations or numbness in the legs, and constipation. Severe thiamine deficiency results in a deficiency syndrome known as beriberi. Symptoms include mental confusion, muscle wasting (dry beriberi), fluid retention (wet beriberi), high blood pressure, difficulty walking, and heart disturbances.