Prebiotic fiber supplement shows promise for adolescent bone density

The MetA-Bone study, published in The American Journal of Clinical Nutrition, focused on children aged 9 to 14 who were not meeting daily calcium intake targets. By introducing a twice-daily fiber powder, the researchers aimed to improve the gut’s efficiency in absorbing calcium. Cristina Palacios, the study's lead researcher and chair of dietetics and nutrition at FIU, noted that while a 6% difference in bone mineral content seems modest, it represents a clinically significant buffer against future conditions like osteoporosis.

Interestingly, the study did not observe the same bone-building benefits in boys, a discrepancy researchers attribute to differences in puberty stages and skeletal development. Because the trial was not specifically designed to compare genders, Palacios emphasizes that larger studies are required to confirm these findings. Currently, most adolescents fail to reach the recommended 1,300 milligrams of daily calcium, often replacing dairy with sodas that can hinder bone health. The research suggests that fortifying common foods with soluble fiber could offer a practical, low-effort strategy to help children maximize bone mass during the critical window of early adolescence.