1, Teenagers: Teenagers with calcium deficiency will feel obvious growth pain, leg weakness, cramps and poor physical education class scores; Fatigue, irritability, inattention and easy fatigue; Partial eclipse, anorexia; Tooth decay and tooth dysplasia; Allergies, colds, etc.

2. Adults: The heavy life pressure and intense pace of life often make them ignore some physical discomfort, and the human body slowly enters the negative balance period of calcium, that is, the absorption of calcium decreases and the excretion increases. Symptoms include itching of senile dermatosis; Heel pain, lumbocrural pain; Loss of appetite, peptic ulcer, constipation; Dreaming, insomnia, irritability, irritability, etc.

3, pregnant women and lactating women: women in extraordinary times, when they feel loose teeth; Limb weakness, frequent cramps and numbness; Back pain, joint pain, rheumatic pain; When you are dizzy, suffering from anemia, prenatal hypertension syndrome, edema and insufficient milk secretion, you should pay attention to check whether there is calcium deficiency.

4, calcium deficiency in the elderly: calcium deficiency can lead to osteoporosis in the elderly, with symptoms such as backache, bone pain, numbness of hands and feet, leg cramps, leg weakness, knee weakness, hair loss, and loose teeth. Shortening of body length, hunchback, stooping, short stature, etc.

Extended data:

Calcium supplement method:

There are two ways to supplement calcium, calcium agent and dietary calcium supplement. The most commonly used and traditional calcium supplements are milk and dairy products, which are not only rich in calcium, but also easy to absorb. Milk and dairy products are also rich in minerals and vitamins, among which vitamin D can promote the absorption and utilization of calcium.

Yogurt is also a very good calcium supplement food, which can not only supplement calcium, but also regulate intestinal function through beneficial bacteria, and is suitable for all kinds of people.

For people who don't like or tolerate milk, they can eat more alternative foods, such as oysters, laver, Chinese cabbage, cauliflower, kohlrabi, radish, Chinese cabbage, Chinese cabbage and so on. However, calcium supplementation should also be appropriate, and excessive calcium supplementation is harmful. Therefore, it is safe to supplement calcium on the basis of monitoring bone calcium, and food supplement should be the main method.

Reference: Baidu Encyclopedia-Calcium Deficiency