What Are Some Interesting Calcium Facts?
|What Are Some Interesting Calcium Facts?||Darrell Miller||10/01/11|
October 01, 2011 11:13 AM
Author: Darrell Miller (email@example.com)
Subject: What Are Some Interesting Calcium Facts?
Do you know what contains your teeth and bones?
Have you ever wondered what makes your muscles move, your body respond to stimulus and your heart beat?
If yes, then you might need to explore some of these wonders of the body. As we know for a fact, the body is composed of thousand of cells that need substances such as nutrients for its biological processes and survival. One of these nutrients is the mineral called Calcium which is one of the main chemical substances that make those mentioned above possible.
Calcium is considered to be the most in terms of quantity among all the other minerals inside the body. It is needed for the contraction of muscles so that movement will be achievable. It also influences the constriction and dilation of blood vessels thus helping in the regulation of blood pressure. Aside from its effect on the muscles and blood vessels, calcium also affects the nerves and plays a significant role in the transmission of nerve impulses so that appropriate response to external stimulus will be possible.
Moreover, as an ion, calcium is also required in the process of intracellular signaling and is an important chemical for hormone secretion. Physiologically, the calcium level in the blood to support these functions is only less than 1 % of the total calcium inside the body. Almost 99 % of the body’s calcium is stored in the bones and teeth for structural and functional support, as well as calcium reservoir. If the blood level of calcium decreases, the bones will be demineralized and calcium will be released into the blood stream, thus, normalizing serum calcium level.
Even if the body has reached its maximum growth, the bones will continually undertake remodeling. This process involves regular resorption and deposition of calcium minerals into the new bone. Bone remodeling varies from person to person depending on the individual’s age. Bone mineralization or formation exceeds bone demineralization during the growing years of puberty and adolescence.
On the other hand, during early and middle adulthood bone deposition and resorption are usually balanced. Furthermore, women on their post menopausal age exceed bone mineralization or formation. Their bodies constantly extract calcium from bones to compensate blood levels of calcium. This is one of the reasons why post menopausal women have a higher risk of osteoporosis. Therefore, recommended dosage for calcium is higher for women at 50 years and older and men at 70 years and older.
Another interesting fact about Calcium is that it requires Vitamin D which is also a nutrient that can be naturally produced by the body and can also be supplied by the diet. On the other hand, foods which can lessen the absorption rate of calcium are the foods which are high in oxalic acid and phytic acid. Examples of foods rich in oxalic acid are spinach, sweet potatoes and beans, while those that contains high phytic acid are wheat bran (not wheat products), seeds, nuts and soy. Caffeine, alcoholic beverages, phosphorus, sodium and proteins can decrease the absorption of calcium, thus increasing elimination through the urine, feces and sweat.