Please Scroll Down to See Forums Below
Mg/Ca or Mg ?
- Thread starter anthrax
- Start date
sawastea
Well-known member
As far as bone health is concerned, try to shoot for a 1:1 (optimal) or 2:1 Ca2+ to mg ratio. If you take a high dose of Ca2+ w/o the proper Mg, it may in fact weaken bones.
http://www.beyondveg.com/cordain-l/prot-calc/prot-calcium-loss-1a.shtml
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
High dietary calcium reduces body fat content, digestibility of fat, and serum vitamin d in rats.
Papakonstantinou E, Flatt WP, Huth PJ, Harris RB.
Department of Foods and Nutrition, University of Georgia, Athens, Georgia and. Research and Development Center, Kraft Foods Inc., Glenview, Illinois.
OBJECTIVE: This study investigated which aspect of energy balance was responsible for the decrease in body fat content of rats fed a high-calcium, high-dairy protein diet. RESEARCH METHODS AND PROCEDURES: Male Wistar rats were fed a control diet (25% kcal fat, 14% kcal protein from casein, 0.4% by weight calcium) or high-calcium diet (25% kcal fat, 7% kcal protein from nonfat dry milk, 7% kcal protein from casein, 2.4% calcium) for 85 days. Body weights, digestible energy intakes, energy expenditures, rectal temperatures, body composition, and serum glucose, insulin, free fatty acids, triglycerides, and 1,25-dihydroxyvitamin D were measured. RESULTS: Rats fed high-calcium diet gained significantly less weight than controls and had 29% less carcass fat. Gross energy intake was not significantly different between groups, but digestible energy was 90% of gross energy in the high-calcium diet compared with 94% in the control diet because of increased fecal excretion of dietary lipid. The difference in digestible energy intake accounted for differences in carcass energy. Body temperatures and energy expenditures of the rats were not different. The high-calcium diet reduced serum triglycerides by 23% and serum 1,25-dihydroxyvitamin D by 86%. DISCUSSION: These results confirm that a high-calcium diet decreases body weight and fat content due to a lower digestible energy intake caused by increased fecal lipid and a nonsignificant reduction in gross energy intake.
PMID: 12634435 [PubMed - in process]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Am J Clin Nutr 2001 Oct;74(4):549-54 Related Articles, Links
Dairy products, calcium, and prostate cancer risk in the Physicians' Health Study.
Chan JM, Stampfer MJ, Ma J, Gann PH, Gaziano JM, Giovannucci EL.
Department of Nutrition, Harvard School of Public Health, Boston, USA. [email protected]
BACKGROUND: A high calcium intake, mainly from dairy products, may increase prostate cancer risk by lowering concentrations of 1,25-dihydroxyvitamin D(3) [1,25(OH)(2)D(3)], a hormone thought to protect against prostate cancer. The results of epidemiologic studies of this hypothesis are inconclusive. OBJECTIVE: We investigated the association between dairy product and calcium intakes and prostate cancer risk in the Physicians' Health Study, a cohort of male US physicians. DESIGN: At baseline, the men answered abbreviated dietary questionnaires. During 11 y of follow-up, we documented 1012 incident cases of prostate cancer among 20885 men. We estimated dairy calcium intake on the basis of consumption of 5 major dairy products and used logistic regression to estimate relative risk. RESULTS: At baseline, men who consumed >600 mg Ca/d from skim milk had lower plasma 1,25(OH)(2)D(3) concentrations than did those consuming < or =150 mg Ca/d [71 compared with 85 pmol/L (30.06 compared with 35.64 pg/mL); P = 0.005]. Compared with men consuming < or =0.5 daily servings of dairy products, those consuming >2.5 servings had a multivariate relative risk of prostate cancer of 1.34 (95% CI: 1.04, 1.71) after adjustment for baseline age, body mass index, smoking, exercise, and randomized treatment assignment in the original placebo-controlled trial. Compared with men consuming < or =150 mg Ca/d from dairy products, men consuming >600 mg/d had a 32% higher risk of prostate cancer (95% CI: 1.08, 1.63). CONCLUSIONS: These results support the hypothesis that dairy products and calcium are associated with a greater risk of prostate cancer.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Anyway, the follow up question is how much is too much calcium? That is still TBD in my mind. I'm currently taking 2g daily of calcium citrate
http://www.beyondveg.com/cordain-l/prot-calc/prot-calcium-loss-1a.shtml
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
High dietary calcium reduces body fat content, digestibility of fat, and serum vitamin d in rats.
Papakonstantinou E, Flatt WP, Huth PJ, Harris RB.
Department of Foods and Nutrition, University of Georgia, Athens, Georgia and. Research and Development Center, Kraft Foods Inc., Glenview, Illinois.
OBJECTIVE: This study investigated which aspect of energy balance was responsible for the decrease in body fat content of rats fed a high-calcium, high-dairy protein diet. RESEARCH METHODS AND PROCEDURES: Male Wistar rats were fed a control diet (25% kcal fat, 14% kcal protein from casein, 0.4% by weight calcium) or high-calcium diet (25% kcal fat, 7% kcal protein from nonfat dry milk, 7% kcal protein from casein, 2.4% calcium) for 85 days. Body weights, digestible energy intakes, energy expenditures, rectal temperatures, body composition, and serum glucose, insulin, free fatty acids, triglycerides, and 1,25-dihydroxyvitamin D were measured. RESULTS: Rats fed high-calcium diet gained significantly less weight than controls and had 29% less carcass fat. Gross energy intake was not significantly different between groups, but digestible energy was 90% of gross energy in the high-calcium diet compared with 94% in the control diet because of increased fecal excretion of dietary lipid. The difference in digestible energy intake accounted for differences in carcass energy. Body temperatures and energy expenditures of the rats were not different. The high-calcium diet reduced serum triglycerides by 23% and serum 1,25-dihydroxyvitamin D by 86%. DISCUSSION: These results confirm that a high-calcium diet decreases body weight and fat content due to a lower digestible energy intake caused by increased fecal lipid and a nonsignificant reduction in gross energy intake.
PMID: 12634435 [PubMed - in process]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Am J Clin Nutr 2001 Oct;74(4):549-54 Related Articles, Links
Dairy products, calcium, and prostate cancer risk in the Physicians' Health Study.
Chan JM, Stampfer MJ, Ma J, Gann PH, Gaziano JM, Giovannucci EL.
Department of Nutrition, Harvard School of Public Health, Boston, USA. [email protected]
BACKGROUND: A high calcium intake, mainly from dairy products, may increase prostate cancer risk by lowering concentrations of 1,25-dihydroxyvitamin D(3) [1,25(OH)(2)D(3)], a hormone thought to protect against prostate cancer. The results of epidemiologic studies of this hypothesis are inconclusive. OBJECTIVE: We investigated the association between dairy product and calcium intakes and prostate cancer risk in the Physicians' Health Study, a cohort of male US physicians. DESIGN: At baseline, the men answered abbreviated dietary questionnaires. During 11 y of follow-up, we documented 1012 incident cases of prostate cancer among 20885 men. We estimated dairy calcium intake on the basis of consumption of 5 major dairy products and used logistic regression to estimate relative risk. RESULTS: At baseline, men who consumed >600 mg Ca/d from skim milk had lower plasma 1,25(OH)(2)D(3) concentrations than did those consuming < or =150 mg Ca/d [71 compared with 85 pmol/L (30.06 compared with 35.64 pg/mL); P = 0.005]. Compared with men consuming < or =0.5 daily servings of dairy products, those consuming >2.5 servings had a multivariate relative risk of prostate cancer of 1.34 (95% CI: 1.04, 1.71) after adjustment for baseline age, body mass index, smoking, exercise, and randomized treatment assignment in the original placebo-controlled trial. Compared with men consuming < or =150 mg Ca/d from dairy products, men consuming >600 mg/d had a 32% higher risk of prostate cancer (95% CI: 1.08, 1.63). CONCLUSIONS: These results support the hypothesis that dairy products and calcium are associated with a greater risk of prostate cancer.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Anyway, the follow up question is how much is too much calcium? That is still TBD in my mind. I'm currently taking 2g daily of calcium citrate
M
Mr.X
Guest
Anthrax said:
As far as I remember, Calcium inhibits the absorption of thyroid medication and iron - I haven't hear of the Magnesium factor.
Usually, Calcium alters the bone-related hormones and possibly the local hormones induced by mechanical stress. In addition, Calcium could alter the physical-chemical properties of the bone mineral (this could be something misconcepted for mg problems). The major mechanism whereby calcium effects bone is probably through inhibition of PTH secretion. Direct effects of calcium on the calcium receptor could also play a role.
Mr.X
M
Mr.X
Guest
These two studies don't have a direct correlation to MG at all:
fat-loss study
Vit D relation study:
http://www.icgeb.trieste.it/~p450srv/ligand/24_25dihydroxyD3.html
Mr.X
fat-loss study
Vit D relation study:
http://www.icgeb.trieste.it/~p450srv/ligand/24_25dihydroxyD3.html
Mr.X
ProtienFiend
New member
take them separately... calcium does infact inhibit proper magnesium absorbtion... it is much more readily absorbed than most other vitamins/minerals...
M
Mr.X
Guest
ProtienFiend said:
Please show me a study to back up this statement...
Mr.X
Similar threads
