1, teenagers: Teenagers who lack calcium will feel obvious growth pain, leg weakness, cramps, and poor performance in physical education class; Fatigue, irritability, lack of concentration, easy to get tired; Partial eclipse, anorexia; Tooth decay and tooth dysplasia; Allergic, cold, etc.
2. Adults: Heavy life pressure and intense pace of life often make them neglect some physical discomfort, and the human body slowly enters a period of negative calcium balance, that is, the absorption of calcium decreases and the excretion increases. Symptoms include itching of senile dermatosis; Heel pain, lumbar and cervical pain; Loss of appetite, peptic ulcer, constipation; Dreaming, insomnia, irritability, irritability, etc.
3, pregnant women and lactating women: women in an extraordinary period, when they feel loose teeth; Limb weakness, frequent cramps and numbness; Back pain, joint pain, rheumatism pain; When you are dizzy and suffer 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, backache, bone pain, numbness of hands and feet, leg cramps, leg weakness, knee weakness, hair loss, loose teeth and so on. Shortened body length, hunchback, bent waist, 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 supplement food is 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 kind of very good calcium supplement food, which can not only supplement calcium, but also regulate intestinal function by beneficial bacteria, and is suitable for all kinds of people.
For those who don't like or are intolerant of milk, they can eat more alternative foods, such as oysters, laver, Chinese cabbage, cauliflower, kohlrabi, turnip, cabbage, Chinese cabbage and so on. However, calcium supplementation should also be supplemented in moderation, and excessive calcium supplementation is harmful. Therefore, it is safe to supplement calcium on the basis of monitoring bone calcium, and food supplementation should be the main method.
Reference: Baidu Encyclopedia-Calcium Deficiency