The simple view of the bonding in methane You will be familiar with drawing methane using dots and crosses diagrams, but it is worth looking at its structure a bit more closely. There is a serious mis-match between this structure and the modern electronic structure of carbon, 1s 2 2s 2 2p x 1 2p y 1.
The second reason for a low vitamin D is that you have primary hyperparathyroidism due to a small tumor in your neck and the body converts all the vitamin D-25 (that your doctor is measuring) to the active Vitamin D-1-25 (that doctors do not measure). This is the blue blob on the graph.
Low vitamin D levels can be found in people of all age group including small babies and the elderly. Some of the most common symptoms of low vitamin D are fatigue, muscle pain, joint pain, weight gain, headache, constipation or diarrhea, high blood pressure, etc. There are several factors that can contribute to this problem. Following are some of the prevalent causes of low vitamin D in the human body. â Lack of Exposure to Sunlight. The inner layer of the skin produces vitamin D using sunlight. If one does not have enough sun exposure, he or she may develop vitamin D deficiency.