Boron and Bone Health

algaecal plant calcium boron bone health

Boron plays an integral part in supporting healthy bones since it supports the functions of calcium, magnesium, and vitamin D. [6-9]

In an important study of postmenopausal women, scientists examined boron’s effect on various measures of bone health. The women ate a boron-deficient diet for 119 days, followed by 48 days of boron supplementation. On the boron-depleted diet, the participants demonstrated increased urinary loss of both calcium and magnesium. On the boron-supplemented diet, however, they showed less urinary excretion of calcium and magnesium, as well as increased levels of two hormones associated with healthy bone mass. [8] The take home lesson is that adequate boron intake is essential to preserving the body’s stores of bone-building calcium and magnesium.

The researchers also studied the women during periods of both adequate magnesium intake and magnesium deficiency. Here, too, boron helped to preserve essential stores of calcium and magnesium in the body. While the magnesium-depleted diet was associated with increased loss of urinary calcium, boron supplementation significantly reduced urinary loss of both calcium and magnesium. The researchers observed that boron deprivation produced changes similar to those seen in osteoporosis, and that adequate boron status helped prevent calcium loss and bone demineralization in postmenopausal women. [8] Boron thus has important applications in helping women preserve bone mass and prevent osteoporosis following menopause.

Boron may likewise help to alleviate the detrimental effects of vitamin D deficiency on calcium metabolism. Vitamin D is crucial to bone health because it helps to support calcium absorption. One study showed that when animals were fed a diet deficient in vitamin D, increasing dietary boron intake helped support optimal calcium absorption. This finding indicates an additional role for boron in promoting optimal mineral balance and ensuring healthy calcium utilization. [9]

Clinical studies demonstrate that the boron form used in AlgaeCal Plus, is particularly effective in supporting healthy bones because boron increases serum levels of calcium absorption stimulating Vitamin D-3 by 24% in less than 2-months.

Another study from the University of Wisconsin examined the effects of boron on vitamin D-deficient rats, which serve as a research model for studying osteoporosis treatments. After eight weeks of treatment with boron, the rats’ bone mineral content increased by 5.8% compared to non-supplemented control animals. Although animal studies are not as helpful as human studies, this finding lends additional weight to the beneficial role of boron in increasing bone mineral density. [2]

Remarkably, despite boron’s well substantiated importance in maintaining bone health, some of the leading bone health products on the market do not include any form of boron! Furthermore, the few products that do include boron use inexpensive varieties that are not optimally absorbed. The absence of boron in bone health supplements may contribute to the epidemic of low bone mass and osteoporosis that afflicts so many aging adults, even those who use commercial supplements.


  1. Kelly GS. Boron: A review of its nutritional interactions and therapeutic uses. Altern Med Rev. 1997 Jan;2(1):48-56.
  2. Available at: Accessed June 1, 2006.
  3. Smyth HF Jr, Carpenter CP, Weil CS, Pozzani UC, Striegel JA, Nycum JS. Range-finding toxicity data: List VII. Am Ind Hyg Assoc J. 1969 Sep-Oct;30(5)470-6.
  4. Available at: Accessed June 1, 2006.
  5. Schaafsma A, de Vries PJ, Saris WH. Delay of natural bone loss by higher intakes of specific minerals and vitamins. Crit Rev Food Sci Nutr. 2001 May;41(4):225-49.
  6. Miggiano GA, Gagliardi L. Diet, nutrition and bone health. Clin Ter. 2005 Jan-Apr;156(1-2):47-56.
  7. Nielsen FH, Hunt CD, Mullen LM, Hunt JR. Effect of dietary boron on mineral, estrogen, and testosterone metabolism in postmenopausal women. FASEB J.
  8. Hegsted M, Keenan MJ, Siver F, Wozniak P. Effect of boron on vitamin D deficient rats. Biol Trace Elem Res. 1991 Mar;28(3):243-55.

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