1. Hypocalcemia or reduced secretion of parathyroid hormone may cause abnormal brain waves and cause epilepsy.

2. It was first discovered that bacteria invade the human body through calcium, and it is also calcium that orders phagocytes to start taking action. Calcium is the messenger of the immune system. Calcium deficiency can lead to immune dysfunction.

3. The secretion of insulin depends entirely on instructions from calcium. When calcium is lacking, the human body cannot secrete insulin smoothly, leading to adult diabetes.

4. People who eat a lot of salt are prone to high blood pressure, because sodium will hinder the absorption of calcium and cause calcium to be deposited in blood vessels and become junk calcium, causing blood vessels to become thin and brittle, and enlarging the heart. The resistance to pumping blood around the body increases blood pressure.

5. When calcium intake is insufficient, the parathyroid gland will secrete parathyroid hormone to take calcium from the bone bank, often in large amounts. Excess calcium can cause anemia.

Extended information:

Dietary calcium supplements

1. Eat soy products regularly. The calcium content of tofu that has been soaked in brine reaches 164 mg/100g. If it is dried tofu, the calcium content can reach 500~700 mg/100g. It is definitely a treasure house of calcium. By eating two ounces of tofu or half a ounce of dried tofu every day, you can easily consume more than 150 mg of calcium. For those who don’t like dairy products, you can eat more soy products.

2. One pound of vegetables every day. The calcium content of many green leafy vegetables is around 100 mg/100g, which is equivalent to the calcium content of milk. The recommended intake of vegetables is 300 to 500 grams per person per day. If you eat all green leafy vegetables, you can get more than 500 mg of calcium.

Even if half of it is green leafy vegetables, the calcium intake can be close to 1/3 of the recommended amount. In addition to being high in calcium, green leafy vegetables are also rich in a variety of nutrients that help calcium absorption, such as magnesium and vitamin K.

3. Nuts as snacks. Cashews, melon seeds, pistachios, hazelnuts and other nuts and seeds have higher calcium content. For example, hazelnuts have a calcium content of up to 815 mg/100g, making them a very good calcium supplement snack. However, the fat content of nuts is high, so you should only eat a handful a day to avoid excessive energy intake.

People's Health Network - 5 serious consequences of calcium deficiency in the human body and easy calcium supplement tips

People's Health Network - nutritionists' dietary calcium supplement recommendations