MAIN Health Vitamins & Minerals Calcium

Calcium, known as Ca on the periodic table, is the fifth most abundant element by mass in the earth's crust. It's everywhere, which is good because this common mineral provides a number of health benefits to the human body.

Calcium's most well known health benefit is the important part it plays in developing strong bones. Almost all the body's calcium can be found in the bones and the teeth, and there are countless studies which show that proper calcium intake helps young people develop strong bones while keeping the bones of older people strong and healthy.

Calcium also helps to prevent and treat a variety of bone related illnesses, such as osteoporosis.

To get the most out of calcium, however, a sufficient amount of vitamin D must also be taken. Vitamin D is essential to the process by which the body utilizes calcium, and it also provides a whole host of health benefits that are complementary to the health benefits derived from calcium.

It was originally thought that calcium contributed to kidney stone development because kidney stones are made up primarily of calcium, but it turns out that the opposite is actually true. 12% of the American population will develop kidney stones at some point in their lives, but most of that 12% will be people with low calcium intake, because high calcium intake has been widely associated with a greatly reduced risk of kidney stones.

Calcium can also be used to help treat high blood pressure. A variety of studies over the last 20 or more years have all demonstrated an association between lowered blood pressure and high calcium intake.

The most common and well known source of calcium is dairy products, which are generally high in calcium. Calcium is also cheaply available as a vitamin and can be found in a number of vegetables such as broccoli, kale, and a variety of beans.

More health & nutrition facts about calcium around the Web:

The Calcium Information Resource - The complete picture with a Calcium 101 guide to how much to take, where to find it, with more in-depth information including an interactive calcium calculator, downloadable tutorial, a kids corner, and related links and resources.

MedlinePlus: Calcium - Up to the minute news, overviews, tests and clinical trials, with the latest nutrition information from various resources around the Web including facts targeted to women, children and teens.

Calcium FactSheet - What it is, why it's important, average intake in the typical American diet, recommended RDA, good food sources and advice on how to best prepare them to retain the nutrient, from the Ohio State University Extension.

The Vegetarian Society UK - Information Sheet - Calcium - How it functions, the importance of calcium in the vegetarian diet, with information on good food sources, required intake to maintain health, and a sample meal plan.

Vitamin D - The importance of Vitamin D in increasing absorption of calcium in the system, with good food sources for the nutrient and recommended supplements, from the Osteoporosis Society of Canada.

Calcium, Linus Pauling Institute's Micronutrient Information Center - The role calcium plays in disease prevention with a discussion on colorectal cancer, osteoporosis, kidney stones and more, together with information on calcium deficiency, food sources, recommended intake, drug and nutrient interactions including that of Vitamin D, protein, phospherous, sodium and caffeine.

Calcium and Milk: Nutrition Source, Harvard School of Public Health - Layman-friendly and fairly comprehensive with facts on bone health, osteoporosis, Vitamin D, natural and alternate sources of calcium, the dangers of a high calcium diet, and related references.

NOF Osteoporosis Prevention - Calcium and Vitamin D Recommendations - Calcium intake recommendations by age level, with information on lactose intolerance, the use of calcium supplements and more on calcium interactions.

also in Vitamins & Minerals -> Vitamin D

also see in Diseases -> Arthritis | Kidney Stones