Micromotors for active delivery of minerals toward the treatment of iron deficiency anemia

Summary

This preclinical study explores active gastrointestinal delivery of minerals as a response to the low bioavailability and side effects that can limit conventional treatment of iron deficiency. Magnesium-based micromotors were loaded with iron and selenium as model nutritional cargos. In gastrointestinal fluid, the motors propelled autonomously, creating dynamic local transport rather than relying solely on passive dissolution and diffusion. Anemic mice received the mineral-loaded formulation for thirty days. Treatment replenished iron and selenium stores and restored major hematological measures—including red-cell count, hemoglobin, and hematocrit—toward normal values. No toxicity was observed over the reported regimen. The principal finding is that an actively moving oral carrier can deliver sufficient mineral payload to correct both stored nutrient deficits and functional blood abnormalities in an animal model. Its significance is a new dosage strategy for nutritional supplementation that may improve absorption while potentially limiting the amount of free mineral responsible for adverse effects. The work remains a proof of concept: the abstract does not compare the micromotors quantitatively with optimized oral supplements, separate the contributions of iron and selenium, describe propulsion and tissue distribution, or provide long-term safety and human feasibility.