Can boron help with joint pain?

There's real, if still limited, evidence for this. Boron concentrates in bone and joint tissue, and several small studies have found lower boron levels in people with osteoarthritis and rheumatoid arthritis compared to those without. A small double-blind pilot trial found joint symptoms improved in the majority of participants taking a modest boron dose over placebo, and more recent trials using calcium fructoborate (a naturally occurring boron compound) have reported reduced pain and stiffness over several weeks. These studies are small, and boron isn't currently classified as an essential nutrient, but the pattern is consistent enough across multiple study types to take seriously, especially alongside adequate calcium, magnesium, and vitamin D.