There are many problems that can occur if your body does not get enough calcium. Some of the first signs are muscle cramping, muscle irritation, and eye twitching. You may als
…o get muscle headaches, jaw pain, and TMJ headaches. With long term calcium deficiency, your bones can become brittle and break easily. You can develop periodontal disease and tooth loss. Some other signs of calcium deficiency include: coarse hair, brittle nails, dry and scaly skin, yeast infections, convulsions, cataracts, unexplained dementia, depression, or psychosis. (MORE) 
