What specific function is attributed to Boron regarding bone health in the diet?

Improving the body's retention of major bone-supporting minerals like calcium and Vitamin D.

Boron is identified as a trace mineral present in plums that works synergistically with essential bone nutrients, notably calcium and Vitamin D. Its attributed role is not necessarily structural or regulatory like the major minerals, but rather facilitative concerning their utilization. Boron is thought to enhance the efficiency with which the body retains and conserves these key minerals. This means that when prunes are consumed, the boron present helps ensure that the calcium and Vitamin D ingested from other dietary sources are kept within the body for longer periods and put to better use in building and maintaining bone structure, optimizing the overall effectiveness of a bone-healthy diet.