What is calcium for?
The main function of calcium is the mineralization of bone in the form of calcium phosphate salts. It is therefore important for growth, but also for adults, to renew calcium in the bone. In fact, 99% of the calcium in our body is in the teeth and bones. But this trace element also plays a role in muscle contraction and blood clotting. His action is therefore vital.
Scientific studies show, in addition, that a diet rich in calcium can reduce the risk of colon cancer.
It should not be abused. Excess calcium can cause cardiovascular disorders and the appearance of kidney stones. In contrast, calcium deficiency causes growth problems or osteoporosis.
The recommended daily calcium intake is 900 mg for an adult. A child between 9 and 18 years old needs 1200 g.

Which foods are rich in calcium?
Dairy products are naturally the largest sources of calcium. But other foods, such as fish, oilseeds (sesame, sunflower ...), legumes, green vegetables or nuts, are also rich in calcium.
But beware, some foods have the opposite effect: salt and caffeine would increase the excretion of calcium through the urine. Better to be reasonable about their consumption.
People over the age of 50 or those who are lactose intolerant may need to take dietary calcium supplements.