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17

Background In the past 10-15 years, thinking on calcium supplementation has shifted significantly. In 2001, a National Institutes of Health (NIH) Consensus Development Panel on Osteoporosis made the recommendation that calcium should be supplemented to maintain daily intake 1000 - 1500 mg/day in older adults. The reasoning behind this was that calcium is ...


7

Dairy products are not the best source of calcium for many reasons. Lactose Intolerance Lactose intolerant people can't have dairy products as they will usually cause various symptoms like diarrhea or cramping High Saturated Fat Content Most dairy products are high in saturated fat, which can be a risk factor for heart disease Milk has been able to cut ...


6

I can understand your confusion, since the literature has confounding data. However, I would suggest that you expand your reasoning beyond only thinking about calcium demand and consider hormonal changes as well. Regardless, a newer paper that recently came out from Hwang et al. (2016) has some great information. They cite the papers that have shown ...


5

If you see a low vitamin D level in conjunction with a raised PTH level, then I think you need to think secondary hyperparathyroidism (HiPTH). But since vast numbers of most western populations have lowish vitamin D levels seen even in my own clinic [3] where sun shine levels are high then it may be just co-incidental. HiPTH disease should not lower the ...


5

The issue whether “excess” dietary protein intake adversely affects bone in humans is a subject of current controversy in nutrition(1),(2),(3) with one group concluding that “excess protein will not harm the skeleton if the calcium intake is adequate”(3) and group that “excessive dietary protein from foods with high potential renal acid load (e.g., animal ...


4

Humans are strange among mammals in making dairy products such a large proportion of their adult diet. It reminds me of this amusing quote by Henry David Thoreau: One farmer says to me, 'You cannot live on vegetable food solely, for it furnishes nothing to make bones with;' and so he religiously devotes a part of his day to supplying his system with ...


3

Stomach acid helps to get iron absorbed from food. Calcium supplements in the form of calcium carbonate will lower stomach acid levels and thereby impede iron absorption. One can avoid that problem by using calcium citrate supplements. The calcium that's naturally present in foods is not in the form of calcium salts like calcium carbonate or calcium citrate. ...


3

According to this review article, adults need a bit more than 1 gram of calcium per day. However, it may be the case that the natural vitamin D levels for the human body should be a lot higher than what is currently the norm, see e.g. here. Calcium is absorbed from the gut by both passive and active mechanisms, the active mechanism is vitamin D dependent. If ...


3

http://www.ncbi.nlm.nih.gov/pubmed/27271361 This study expands on the possibility of certain metabolites found in dietary milk may contribute highly to Single Nucleotide Polymorphism SNP formations. Dietary milk are given primarily to developing organisms, and for that concentrations of growth hormones as well as precursors that transform into growth hormone ...


3

For calcium it depends on age and gender, as shown in this chart: So for a male aged 19-50, 1 liter of Fiji water would be: 17 / 1000 = .017, or 1.7% of the RDV And 1 liter of Evian would be: 78 / 1000 = .078, or 7.8% of the RDV In other words, if you're looking for calcium in bottled water, you're looking in the wrong place. It's the most expensive ...


2

National Institutes of Health (NIH) Medline Plus website has the same recommendations as the FDA, broken down by age, sex, and pregnancy status. They cite the 2010 Institute of Medicine (IOM) report Dietary Reference Intakes for Calcium and Vitamin D which is very comprehensive and can be downloaded for free. The report says that: mean calcium ...


2

First of all, I'm not sure whether the question is answerable at all without a more detailed scenario. So we have: Ca²⁺ excretion increasing with excess protein This seems to be linked to elimination of excess acids rather than directly to protein according to http://jn.nutrition.org/content/141/3/391.long. https://www.ncbi.nlm.nih.gov/pubmed/15546911 ...


2

If you have kidney stones or you are at increased risk of developing them, ask a doctor if your urine is super- or under-saturated with any substance, such as calcium, oxalate, uric acid, cystine or citrate; this is a crucial info that can tell if any diet can help. Explanation at-a-glance: Eating, Diet, & Nutrition for Kidney Stones by NIDDK. Evidence ...


2

There seems to be no evidence that zinc supplements would cause hypocalcemia in humans. According to the study Effect of zinc supplements on the intestinal absorption of calcium (PubMed, 1987), calcium and zinc may inhibit each other's absorption: the high zinc intake decreased the intestinal absorption of calcium during a low calcium intake but not ...


2

There doesn't seem to be a problem when you look at iron status so there may be other mechanisms at play that compensate for the effect of calcium on iron absorption. Studies on human subjects have shown that calcium (Ca) can inhibit iron (Fe) absorption, regardless of whether it is given as Ca salts or in dairy products. This has caused concern as ...


1

Answer: Blood levels for electrolytes are maintained by homeostasis in most people, primarily in the kidneys. But they can actually vary quite widely within hours - depending on health conditions and medications. It can even vary fatally in some (rare) cases. Why I cannot give a more complete answer: There are too many possible reasons to discuss ...


1

Arguments that suggest that there exists a rather trivial vulnerability in the human body that would be relevant even if you stick to a healthy lifestyle, should a priori be considered to be unlikely. Animals have survived for hundreds of millions of years in the wild without needing to consult expert dietitians to make sure calcium absorption is not ...


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