It is widely accepted that the modern diet is deficient in 2 essential nutrients that contribute to bone building, calcium, and magnesium, and that low doses of calcium can contribute to an increased rate of bone loss with age.
 
The Department of Health in Great Britain recommends a daily calcium intake of more than 1200mg for women, an amount which is difficult to achieve through the modern diet (especially if the diet includes few dairy products).
 
Magnesium, which is increasingly lacking in the modern diet, is known to aid in the deposition of calcium in the bones.
 
A 2:1 ratio of dietary calcium: magnesium intake is often recommended.
 
Osteoguard provides calcium and magnesium in a ratio of 2:1, enriched with Boron and Vitamin D and K, to facilitate the absorption of calcium by the body.