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The Dr. Guy Abraham Study of 1990

The resuts of this study suggests that 500 mg of Calcium & 600 mg of Magnesium has a significant effect on reversing postmenopausal bone loss within a relatively short period of time. The effect of this magnesium-empthasized program on bone density was 16 times greater than that of dietary advice alone. There was a 11% increase in bone density using 500 mg Calcium & 600 mg Magnesium. (Table II)

Vol. 35 No. 5, May 1990

A Total Dietary Program Emphasizing Magnesium Instead of Calcium.

Effect on the Mineral Density of Calcaneous Bone in Postmenopausal Women on Hormonal Therapy

Guy E. Abraham, / M.D. Harinder Grewal, M.D.

The use of calcium supplementation for the management of primary postmenopausal osteoporosis (PPMO) has increased significantly in the past few years. A review of the published data does not support calcium mega dosing during post menopause. Controlled studies showed no significant effect of calcium intake on mineral density of trabecular bone and a slight effect on cortical bone.

Since PPMO is predominantly due to demineralization of trabecular bone, there is no justification for calcium mega dosing in postmenopausal women. Soft tissue calcification is a serious risk factor during calcium mega dosing under certain conditions. A total dietary program emphasizing magnesium instead of calcium for the management of PPMO takes into account the available data on the effects of magnesium, life-style and dietary habits on bone integrity and PPMO.

When this dietary program was tested on 19 postmenopausal women on hormonal replacement therapy who were compared to 7 control postmenopausal women, a significant increase in mineral bone density of the calcaneous bone (BMD) was observed within one year. Fifteen of the 19 women had had BMD below the spinefracture threshold before treatment; within one year, only 7 of them still had BMD values below that threshold.


Osteoporosis is a clinical syndrome characterized by a high susceptibility to bone fracture with resultant symptomatology and is due to an excessive amount of bone loss without any change in bone structure.1, 2 It is called "primary osteoporosis" when there are no known factors and includes senile osteoporosis, with both cortical and trabecular bone loss, and postmenopausal osteoporosis (PPMO), with mainly trabecular bone loss during the first decade after menopause.3, 4

During the last National Institutes of Health work shop on osteoporosis, in 1987, the panel of experts recommended a daily intake of 1,500mg of calcium by postmenopausal women as a means of preventing PPMO even though the clinical studies presented in the same proceedings reached different conclusions 6, 7: calcium supplementation in daily amounts of less than or equal to 3,000 mg had no significant effect on postmenopausal trabecular bone loss above the placebo effect.

One of us (G.E.A.) previously postulated that PPMO is a skeletal manifestation of magnesium deficiency with the corollary that postmenopausal trabecular bone loss would not occur even without estrogen therapy if the magnesium intake were sufficient to maintain an adequate bone magnesium reserve. That author proposed a total dietary program emphasizing magnesium instead of calcium, not unlike the dietary recommendations for women with the premenstrual tension syndrome.

To test the above postulate, the magnesium- emphasized program was implemented for 6-12 months in 19 postmenopausal women receiving hormonal replacement therapy. Seven postmenopausal women on hormonal replacement therapy served as controls. Trabecular bone density was assessed with single photon densitometry of the calcaneous bone.

Materials and Methods

Twenty-six postmenopausal women were recruited from a menopause clinic. All subjects were on hormonal replacement therapy, either estrogen alone in those with surgical menopause or cyclic progestogen superimposed on estrogen therapy in those with an intact uterus.

All patients underwent bone density measurement of the calcaneous bone (BMD) with single photon absorptiometry as described by Ross et al and were advised about the dietary program (Figure 1). Micronutrients were supplied in the form of a complete multivitamin, multimineral supplement (Gynovite, Optimox, Inc., Torrance, CA) containing 500 mg of calcium as the citrate salt and 200 mg of magnesium as the oxide (Table 1).

Seven patients received dietary advice but chose not to take the supplement. Nineteen patients received dietary advice and ingested six tablets of the nutritional supplement daily. Besides the supplement, magnesium oxide was given at a daily dosage of 400 mg of elemental magnesium. Therefore, the 19 patients received 50% of the recommended daily allowance (RDA) of calcium and 200% of the RDA of magnesium for women.

In all 26 patients, BMD of the calcaneous bone was repeated at their return visit, 6-12 months later. The radioactive materials were replaced every three months to prevent artifacts from significant radioactive decay, resulting in a prolonged counting time during BMD measurement.

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Comparing the two groups of patients, there was no significant difference in age, height, weight, years since menopause, duration of hormone therapy, base line BMD or duration of follow-up (Table II).

A nonsignificant increase, 0.7%, in the mean BMD of the seven patients receiving hormonal therapy and dietary advice was observed as compared to a mean increase of 11% in the 19 women receiving the supplements (P < .01 by paired data analysis) (Table II).


Since several nutrients besides calcium are important for bone integrity,11-24 a total dietary program would be preferable to calcium supplementation in the prevention and management of PPMO.

Albanese et al 11 reported that calcium supplementation alone was two to three times less effective on phalanx bone density in women aged 38-66 years than was nutritional supplementation containing the same amount of calcium plus some essential trace elements and vitamins at RDA levels. However, Albanese’s supplement lacked several essential micronutrients and did not contain magnesium.

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The results of the present study suggest that complete nutritional supplementation containing 500 mg of calcium as the citrate salt and 600 mg of magnesium as the oxide has a significant effect on reversing postmenopausal bone loss of the calcaneous bone within a relatively short period of time in patients receiving hormonal replacement therapy for several years.

The effect of this magnesium-emphasized program on calcaneous bone density was 16 times greater than that of dietary advice alone in postmenopausal women on hormonal replacement therapy.

Ross et al 10 defines the spine fracture threshold as a BMD of 0.32 g/cm of the calcaneous bone. In 15 of the 19 women receiving the supplement the BMD was below the fracture threshold before treatment. Within a year after the program only seven patients had BMD values <0.32 g/cm (Table II).

Dalderup was the first to report, in 1960, a possible role of magnesium in therapy for osteoporosis He also warned against soft tissue calcification caused by calcium and vitamin D megadosing.

A recent literature review suggested that the magnesium content of the food supply in Europe and North America results in a daily intake averaging 72-161 mg below women’s RDA of 300 mg. Magnesium supplementation ranging from 67 to 600 mg daily improved several clinical problems in those countries.

The RDA of magnesium for Soviet women varies from 500 to 1250 mg, depending on physiologic conditions. It is unlikely that genetic factors account for such a difference in magnesium requirements between Soviet and U.S. women.

The U.S. RDA of magnesium, based on short-term balance studies, probably is the minimum daily intake of magnesium that the human body can adjust to but at the cost of increased susceptibility to stress and, very probably, PPMO.8 Long-term balance studies have indicated much greater needs for magnesium than the U.S. RDA, and >1,000 mg/d is sometimes required to maintain a positive balance under stressful conditions.

It was postulated by one of us (G.EA.) that PPMO is predominantly a skeletal manifestation of chronic magnesium deficiency, facilitated by estrogen withdrawal during postmenopause. If this postulate is correct and properly designed clinical trials could test it easily, postmenopausal trabecular bone loss might not occur even without estrogen replacement therapy as long as the magnesium intake and bone magnesium reserve were adequate.

Even senile osteoporosis would be prevented by this program because the high-magnesium diet would lower the calcium threshold. Raising the RDA of magnesium to 1,000 mg/d and lowering that for calcium to 500 mg/d might be the most cost-effective approach to PPMO at a national level.

This proposed RDA for calcium would be more in line with the World Health Organization’s “practical allowance” of 400-500mg daily for adults. Such a reversal of the magnesium:calcium ratio in the RDA recommendation most probably would lower the incidence and prevalence of many other degenerative diseases and pregnancy complications caused in part by magnesium deficiency.

We are now undertaking a more comprehensive study of the magnesium-emphasized dietary program in postmenopausal women not receiving hormonal replacement because of contraindications to estrogen use. The daily supplementation of elemental magnesium will vary from 200 to 1,000 mg. If the above postulate is valid, BMD changes would be expected to correlate positively with the amount of magnesium ingested.

If, indeed, a magnesium-emphasized dietary program reverses bone loss in PPMO, this program for PPMO might be the most cost-effective one and essentially devoid of side effects.


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ALPHA 'Calcium Health Support' uses all the cofactors recommended by Dr Betty Kamen Ph.D. and the calcium/magnesium ratio from the Dr Guy Abraham Ph.D. Study of 1.2 to 1 of magnesium over calcium.


A Must Read book regarding Calcium and Bone Health.

"Americans drink more milk than the people of any other nation. Yet we have the higest incidence of bone problems."

Dr Betty Kamen Ph.D