You should supplement calcium in time at the age of 50, so as not to be absorbed even if you supplement calcium every day when you are older. It is recommended that you use calcium tablets containing vitamin D to increase calcium content. Eat calcium foods such as milk, kelp, dried shrimps, soy products, and animal bones. At the same time, increase exercise appropriately, do more outdoor sports, and increase exposure to sunlight, because ultraviolet rays can increase the body's own synthesis of vitamin D and increase the intestinal response to food. Some people have questions about calcium absorption: Bones will be healthy only if you supplement calcium. If you don’t supplement calcium, how can you prevent osteoporosis? This view is wrong. Osteoporosis is indeed a disease closely related to calcium, but it is not what people think: "calcium deficiency will definitely lead to osteoporosis, and osteoporosis must be due to calcium deficiency." Osteoporosis is an endocrine and metabolic disease. The fundamental cause is the disorder in the body's utilization of calcium. It does not necessarily mean that the body is deficient in calcium. In other words, even if a person has enough calcium in the body, there is a problem with the absorption and utilization of calcium due to metabolism and other reasons, resulting in the inability of calcium to fully exert its effect, and he may suffer from osteoporosis.