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Reflecting on the past year, the editors and writers of the Office of Communications picked some of the most significant scientific achievements they covered at Stanford Medicine in 2023.

In a Stanford study, sedentary mice appear to benefit from another same-aged mouse’s exercise — if they receive injections of its blood.

Scientists have identified a key factor in mental aging and shown that it might be prevented or reversed by fixing a glitch in the immune system’s front-line soldiers.

Stanford scientists, focusing on chemical adjuncts affixed to DNA-associated proteins, found that these markings become more diverse with age.

Stanford researchers found that activating bone stem cells helps repair fractures in diabetic mice. Applying a protein to the fracture site increased the expression of key signaling proteins and enhanced healing in the animals.

On spatial-memory tests, old mice given infusions of blood plasma from young mice outperformed old mice who got plasma from old mice. The infused mice also exhibited corresponding neurophysiological changes.