How should calcium supplementation be done? Many people exhibit symptoms of calcium deficiency, necessitating supplementation. But how should it be done? Some consume bone broth, others eat vegetables—are these methods truly effective? Today, we highlight nine common misconceptions about calcium supplementation.
Spinach doesn't aid calcium absorption
Spinach contains high levels of oxalic acid, which binds with calcium in tofu to form insoluble precipitates. Therefore, spinach should not be consumed with tofu. However, spinach also contains abundant factors that promote calcium absorption, including rich potassium, magnesium, and vitamin K—the highest among all fresh foods.
Dried shrimp shells boost calcium absorption
While dried shrimp shells are calcium-rich, they are excessively salty and have a fishy odor. Moreover, they contain trace amounts of nitrosamine carcinogens, which can be harmful to health when consumed in large quantities. Crucially, dried shrimp shells only provide calcium without the nutrients needed for its absorption, resulting in low calcium utilization.
Beef benefits bone health
Many believe Europeans and Americans have strong bones because they consume beef. However, in reality, many heavy beef eaters suffer from severe calcium deficiency. This is because all meats, including beef, contain extremely low levels of calcium.Simultaneously, meat contains large amounts of "acid-forming elements," primarily phosphorus, sulfur, and chlorine. These elements make the blood more acidic, forcing the body to use calcium ions from food and bones to neutralize them. This process increases calcium loss from the body and reduces calcium absorption.While soy milk is an excellent food, its calcium content falls far short of milk. This is because although soybeans themselves contain a reasonable amount of calcium, grinding them with ten cups of water to make soy milk dilutes the calcium content significantly. However, for bone health, soy milk provides phytoestrogens, which can help reduce calcium loss in postmenopausal women.
Bone broth won't prevent calcium deficiency
Experiments show that after two hours of pressure cooking, fat from the bone marrow rises to the surface, yet calcium levels in the broth remain low. To enhance calcium extraction from bone broth, add half a bowl of vinegar and simmer slowly for one to two hours. Vinegar aids in dissolving bone calcium.However, note: Never use a pressure cooker for this. A clay pot is best to prevent excessive aluminum leaching into the broth.
Drinking beverages has no effect on calcium supplementation
Most beverages contain phosphates, which severely hinder calcium absorption and promote calcium loss.Coca-Cola contains phosphoric acid. Soaking human teeth and bones in cola causes them to gradually dissolve. The refined sugar in these drinks also hinders calcium absorption. Therefore, individuals needing calcium supplementation should minimize consumption of sweetened beverages. Tea is rich in potassium ions, low in phosphorus, and contains fluoride that strengthens bones and teeth. Thus, drinking tea benefits bone health.
Kelp for Calcium Supplementation
Many media articles claim kelp is rich in calcium. However, this applies only to dried kelp. Once rehydrated, its calcium content becomes negligible. Additionally, soluble dietary fibers like alginate in kelp hinder calcium absorption by forming strong complexes with calcium, causing both to pass through the digestive tract unchanged.Nevertheless, kelp is not entirely without benefit. As a typical alkaline-forming food, it can be consumed regularly to help reduce calcium loss from the body. Using Lactone Tofu for Calcium Supplementation Soybeans themselves contain considerable calcium, and calcium-rich coagulants are added during tofu production, making tofu one of the best plant-based calcium sources.However, lactone tofu is not a good calcium source because it uses glucono-delta-lactone as a coagulant instead of calcium-containing agents. Moreover, lactone tofu has excessive water content and low levels of both protein and calcium. Similarly, "Japanese tofu" is also ineffective for calcium supplementation.
Vegetables and Bone Health
Many believe vegetables only provide dietary fiber and vitamins, unrelated to bone health. However, vegetables are rich in potassium and magnesium, which help maintain acid-base balance and reduce calcium loss. Leafy greens like bok choy, Chinese cabbage, Chinese broccoli, and celery are calcium-rich and excellent for bone health.The vitamin K in leafy greens is essential for forming osteocalcin, which is necessary for calcium deposition in bones.
We've covered the 9 common misconceptions about calcium supplementation. We hope this has provided you with valuable insights. Finally, we sincerely wish you good health and happiness.