The calcium absorption rate decreases with age. The calcium absorption rate of infants can reach 50% , that of children is about 40% , and that of adults is only 20% .

Too little or too much calcium intake will have an impact on the human body. Too much calcium will affect the absorption of iron and the bioavailability of zinc. The appropriate calcium intake (AI) is 800 mg/ day.

Milk and dairy products are good sources of calcium. In addition, nuts and green vegetables are also good sources of calcium. Some special foods such as dried shrimps and sesame paste are also foods with high calcium content. However, food sources of calcium include plants ( shells ) and oxalic acid ( vegetables such as spinach and amaranth ) .

In order to enhance calcium absorption, in addition to taking calcium- containing foods and calcium supplements , the real way to accelerate the absorption rate is to supplement with enough vitamin D. However, vitamin D deficiency is a very common problem. According to the indicators of the National Institute of Medicine of the United States, humans need to take 600 IU (international units) of vitamin D every day , and the upper limit is 4000 IU. Elderly people over 70 years old should use 800~1000 IU every day. Children under one year old should supplement 400 to 1000 IU every day; those over one year old should supplement 600 to 1000 IU. Infants and children can choose chewable vitamin D, which is easier to eat.

Prevention is better than cure. Osteoporosis can be avoided by absorbing calcium and vitamin D. Osteoporosis is a disease of bone metabolism. The patient's bone density decreases, making the bone structure fragile and prone to fractures. Osteoporosis has no symptoms, and the most common symptom is fracture, which is common in the femur, spine and anterior hip bone.

Therefore, if people over 14 years old lack vitamin D in their diet , they can choose WHC Little Golden Egg or Little Qianjin ; children over 3 years old can choose WHC Little Superman ( chewable ) or Little Elf . The Omega-3 fatty acids in WHC fish oil can enhance the effect of vitamin D. When the utilization rate of vitamin D in the body is improved , calcium absorption is more efficient. Each batch of fish oil products must pass the strict testing of the International Fish Oil Standard (IFOS), covering content, purity, safety, stability and heavy metal detection, etc., to ensure that the product meets the highest standards.

Due to the high concentration of vitamin D and high purity fish oil , it is very popular in the Hong Kong health market.
Rare ; Nutritionists suggest that children can be trained from an early age to improve bone quality and strengthen bone health with the WHC fish oil series , and adults can also take it every day to improve bone health !

References

Gallagher JC. , 2013 , Vitamin D and aging , Endocrinol Metab Clin North Am , 42(2):319–332. doi: 10.1016/j.ecl.2013.02.