Over one billion people worldwide are over 60, and the population is projected to more than double by 2050. But as more people live into their 60s, 70s, and 80s, health care systems across the globe may face new challenges as they attempt to manage associated increases in age-related disease.

A new study from the University of Chicago taps an ingredient most often used in the lithium-ion batteries that power our devices to open new avenues in biomedical technology. Lithium plays vital roles in the body, but taking it orally can have unwanted side effects—so a pair of UChicago chemistry labs teamed up to find a way to deliver lithium only to the exact places where it’s needed.