When your blood calcium levels decrease (from lack of dietary calcium), it triggers parathyroid hormone (which controls calcium metabolism in the body) to break down bone to buffer the pH of the blood. This increases stress, and is an INFLAMMATORY process that can play a role insomnia. “The parathyroid hormone (PTH) is an important regulator of calcium metabolism. If dietary calcium isn’t sufficient, causing blood calcium to decrease, the PTH increases, and removes calcium from bones to maintain a normal amount in the blood. PTH has many other effects, contributing to inflammation, calcification of soft tissues, and decreased respiratory energy production.