Caffeine leaches calcium from bones, sapping their strength. "You lose about 6 milligrams of calcium for every 100 milligrams of caffeine ingested," Massey says. That's not as much of a loss as salt, but it's worrisome. Your body doesn't absorb calcium well from foods high in oxalates (oxalic acid), such as spinach. Other foods with oxalates are rhubarb, beet greens and certain beans. These foods contain other healthy nutrients, but they just shouldn't be counted as sources of calcium. The acid in cola beverages is phosphoric acid, a biologically weak organic acid (as is citric acid, found in fruit juices). Colas and energy drinks contain a lot of caffeine, and high quantities of caffeine decrease the amount of calcium your body stores. Just one-half of an avocado provides approximately 25% of the daily recommended intake of vitamin K. This nutrient is essential for bone health, as it increases calcium absorption and reduces urinary excretion. Your body constantly breaks down old bone and replaces it with new bone. When you're young, this break-down-build-up process stays balanced, and bones stay strong. However, at about age 30, bone mass stops increasing. If your body isn't getting enough calcium, it will take calcium from your bones. Therefore, conditions that affect the gut and digestion, like celiac disease, chronic pancreatitis, Crohn's disease, and cystic fibrosis, can reduce vitamin D absorption. If you are looking for high quality, high purity and cost-effective Calcium hexaboride, or if you require the latest price of Calcium hexaboride, please feel free to email contact mis-asia.