Protein and Calcium Loss

  • Posted by a hidden member.
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    Mar 17, 2011 11:10 AM GMT
    It's been said that increased dietary protein in the diet has shown to increase losses of calcium in the urine, resulting in a negative calcium balance. Does anyone know much about this effect, if so, how to counterbalance? Thoughts?
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    Mar 17, 2011 2:01 PM GMT
    said by who?
  • bad_wolf

    Posts: 1002

    Mar 17, 2011 2:05 PM GMT
    Might explain why my knee joints are grinding.
  • laguna07

    Posts: 124

    Mar 17, 2011 3:45 PM GMT
    Have never heard this but it makes sense to me personally since I have to take large dosages of calcium to prevent muscle cramping on a regular basis.
  • tuffguyndc

    Posts: 4437

    Mar 17, 2011 4:14 PM GMT
    i have never heard of this either. the only problem i have heard is that if you do too much protein that you will have kidney problems. the problem lies in that people do not drink enough water when they are taking these supplements. if you are cramping up during your workouts. i think you may also be dehydrated. if you are taking protein, that has creatine or nitrix oxide then you need to be drinking at least a gallon of water a day.
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    Mar 17, 2011 5:32 PM GMT
    Terra's statement is somewhat misleading.

    Just increasing protein intake won't cause an increase in calcium loss. Having excess protein can. In short your bodies natural state is more alkaline than acidic and the body neutralizes acid by releasing calcium.

    As with most things related to nutrition, it really isn't that simple. If your primary source of protein is meat then you are taking in calcium with your protein so it can be somewhat of a wash. If it is plant based then you are normally taking in alkaline forming content with your protein.

    I think where people risk running into this issue is when they depend on protein powder that has been refined down to just protein.

    Disclaimer: I am not a professional and you look to one rather than a forum for advice on how to eat.
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    Mar 17, 2011 5:42 PM GMT
    Ya, EXCESS protein can cause kidney stones which, from what i hear, is equivalent to a woman giving birth.

    @Bad_Wolf if ur knee joints are grinding maybe u should take some joint supplements like glucosamine, chondoitin, and MSM... it's like lubrication for your bones
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    Mar 17, 2011 7:13 PM GMT
    One of the treatments for certain types of calcium kidney stones is to reduce the amount of protein in the diet. Physicians will refer the patient to a registered dietitian for modification of the diet.

    With high protein diets, It was originally thought that the excess calcium being excreted in the urine was coming from the bones. This would result in in osteoporosis and fragile bones. This was one of the criticisms of the Adkins diet (lo carb, high protein). There are a few new studies which claim that the calcium is not coming from the bones but rather from increased absorption from the GI tract. There are also a few recent studies that have found that people who consume more than the recommended dose of protein (.8 grams of protein per kg of body weight) have stronger bones.icon_smile.gif This finding has some experts calling for a higher amount of protein in the diets of populations predisposed to osteoporosis.

    Thiazide diuretics (a commonly prescribed blood pressure medication) can reduce the amount of calcium secreted in the urine by the kidneys. Because of this calcium sparing effect, thiazide diuretics are used to prevent calcium stones.
  • Posted by a hidden member.
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    Mar 17, 2011 9:18 PM GMT
    jrunner25 saidsaid by who?

    By PETA, to claim people get too much protein in their standard diets and justify propaganda compounding meat eaters icon_rolleyes.gif
  • barriehomeboy

    Posts: 2475

    Mar 18, 2011 12:14 AM GMT
    Don't believe anything you read in a workout magazine. Hire an expert.