[Beiwang Parent-Child Center] Symptoms of calcium deficiency in children and daily dietary adjustments Calcium deficiency during pregnancy is detrimental to the health of both the baby and the mother. Calcium deficiency may occur even if blood calcium tests are normal. Quickly check whether you are an expectant mother who is also deficient in calcium. Scientific and reasonable calcium supplementation can help you improve your own health and give birth to your baby with more peace of mind. Developing babies need enough calcium for strong bones, teeth, a healthy heart, nerves and muscles, as well as the development and normal heart rhythm.