Which is the best source of calcium?
337106
Depends on how much calcium you want.  The best source for large amounts of calcium would be a Ca supplement.  Naturally, milk and dairy products are a good source.
317614
Ah the great calcium question!!! I will try to give you a little insight to this.  We think we need alot of calcium to create bone and prevent bone loss.  It is true that we need it...but if you think about it, North America is the BIGGEST consumers of dairy and calcium supplements in the world, yet we have the highest rates of osteoporosis....HMMMM I wonder why...well, according to research that I have been reading, the main reason we are so calcium deficient is cuz we are too acidic... Meaning we eat too many "acid forming" foods. And of course the acid "forming" foods are sugar, meats, dairy (ironically enough) chocolate, coffee, artificial flavors and sweeteners, and tap water or water that has no minerals like distilled.  We MUST eat 80% of our diet ALKALINE (all veggies, fruits, and some grains and seeds) and 20% acidic.  We seem to have it the opposite.  your body will do ANYTHING to stay alkaline, thus it will pull calcium from your bones.\n\nTo answer your question, anything in excess is not good.  Too much calcium will cause bone spurs, kidney stones, will aid in hardening the arteries and cause digestive upset.  The recommended daily doseage is about 1000-1200mg of calcium a day.  At least half of that should come from your diet.  A cup of spinach has 280mg of calcium.  2 tablespoons of tahini (ground up sesame seeds) has about the same amount.  Try sardines, molasses, dark leafy greens and sea vegetables like wakame, kelp, or arame.  Soy has alot too.  Taking a few hundred mg's of calcium in supplements is a good idea too, if you do however I recommend a 1:1 ration of equal calcium and magnesium because about 90% of the population is deficient in magnesium.  Also try to get one with vitamin D and Zinc and Boron.  Hope this helps, sorry it was so long, I am trying to better the lives of people with my knowledge ;)\n\nhttp://www.vaxa.com/736.cfm\nhttp://www.naturalhealthschool.com/acid-alkaline.html\nhttp://www.betterbones.com/research/ph_studies.htm\nhttp://www.liferesearchuniversal.com/acid.html\n\nthese are all good sites to check out on the subject\nSmile and love your body!!
371287
Taking calcium together with magnesium supplements are your best bet.  Magnesium aids in absorption.  Milk has calcium but unfortunately your body needs a lot of calcium to digest the high protein content in milk so milk actually makes you calcium deficient.
466889
It depends on what you are needing to add to your diet. Salmon is better for calcium because there are edible bones in the can. As far as for healthier heart, they are about the same.
56904
You need to have your minerals in balance, so besides calcium, you should be taking a magnesium supplement also.  If you are drinking milk, 2 or 3 8 oz glasses a day are good.  Magnesium is not in a lot of foods (it's high in almonds and buckwheat), so I find it's easier to take a supplement.\n\nYou should be able to find a magnesium/calcium supplement because these two minerals are known to work together.  If you are looking at an age of bone loss, at least 1 gm (or 1,000 mg) of each is a good amount.\n\nI have entered into menopause myself.  Having been a big milk drinker (at least a quart a day) for all of my life, I have pretty strong bones - at least that's what I've been told when I've gone for bone density scans (my readings are off the charts on the good side).\n\nOn calcium and magnesium - if you want to get them from foods, the best source for both is bone broth that you make yourself from chicken, beef or pork bones.  It's the most bioavailable form for all minerals.
391433
1) Calcium is not a vitamin.  They're two different things.  Calcium is a mineral.\n\n2) Some people complain of constipation when taking calcium supplements.  Otherwise, not much.
921680
Calcium and Strontium
124541
Use Google scholar:\nhttp://scholar.google.com/scholar?q=calcium%20toxicity%20in%20kidney%20cells&hl=en&lr=\n\nAlso here is the tutorial on how to search Entrez Pub-Med\nhttp://www.nlm.nih.gov/bsd/disted/pubmed.html\nIts actually pretty complicated to find what you want thats why I left the tutorial page.\n\nIm sure you can find ALOT of published papers on your subject. Its not an uncommon subject.\n\nGood Luck!
885013
Calcium food.. e.g. Milk\n\nAnd don't forget to have good sleep (min 8 hours) as the growth hormone is generated during sleeping...
1022742
calcium carbonate...\n\ncalcium and carbon....
717358
Jeeze... OK, people... please realize that bones are connected to mammary glands, though the connection is not a direct one...  \n\nBones are made of mineralized proteins. That is, they have a loose structure made of proteins, which are like fibers (think of the protein as like rebar in concrete) around the protein (rebar) are placed minerals (cement) such as Calcium and Phosphate ions. When breast feeding, a woman needs calcium to be available to make milk, but obviously her body doesn't want to liberate all of her bones' calcium. Two hormones regulate calcium levels in the blood, Calcitonin and Parathormone. Parathormone (parathyroid hormone) increases blood levels of Ca, whereas calcitonin decreases blood levels of Ca. These hormones either stimulate bone cells to free Ca into the blood, or put it back into bone, respectively. When nursing, the mother is, of course, using some of her Ca reserves. It's important to note, though, that much of this is replaced by diet, and that there are hormonal checks in place to make sure Calcium depletion doesn't happen. So, no, a healthy woman with a good diet can nurse all she wants. Calcium supplements are not a bad idea, though.\n\nAlso, for God's sake, we don't produce Calcium! It's a mineral, and we have to get it from our diet.
222832
both  omg no it dont make your bones fragile get that out of your head if your consuming regular calcium everyday then your good
1042717
First, tell her to stop taking her calcium. It is a common misconception that taking calcium supplements will help with bone loss in women. The opposite is actually true. Cultures that don't drink milk, take calcium supplements and only ingest 100 mg of calcium from vegetables a day - like China - have no word for "osteoporosis."  Calcium is used by every muscle cell in the body to contract, and magnesium to relax. Add a magnesium, if you like, and it would be a great idea for her to eliminate dairy and wheat for a week or two to see if she improves. You might be suprised that it works quite well.
119663
Calcium is more active.  \nThe first answer is totally wrong.  \nCalcium is more active because it is found in period four, whereas magnesium is period three.  Because calcium is in a higher period further down the chart, it also has more electron levels.  That means that the two electrons that calcium loses when it reacts can be more easily lost than magnesium because there are more electrons in calcium shielding the pull of calcium's nucleus on those critical two outer electrons (valence electrons), decreasing the effective nuclear force of calcium's nucleus.
717028
oxidation of the calcium in the shell
202962
As noted from others, exercise and proper calcium levels are a must.  Dairy is not the best source of calcium: the best are kale, collards, spinach and calcium-fortified soymilk.  The best way to get proper levels of calcium and the vitamins and minerals that go along with bone building is with proper digestion.  If you have a history of indigestion/heartburn, and especially if you take antacids or acid decreasing drugs, you must get digestion working properly.  This includes proper levels of acid in the stomach.  This is necessary for calcium absorption.  Look for a company named Standard Process.  They can direct you to a doctor who can help with digestion.  If you are female, proper balancing of hormones is vital as well.  Get checked out by a doctor who uses natural-based medicine.  Good luck!
201697
It's a rich source of calcium and protein.