Einige der gehirnfördernden Wirkungen von Bewegung können durch winzige Partikel im Blut übertragen werden. Die Injektion dieser Partikel, sogenannte extrazelluläre Vesikel, von Mäusen, die sich sportlich betätigten, in Mäuse, die sich nicht bewegen, förderte das Wachstum neuer Neuronen im Hippocampus, einer Gehirnregion, die für Lernen und Gedächtnis wichtig ist.

I’ve linked to the news release in the post above. In this comment, for those interested, here’s the link to the peer reviewed journal article:

https://www.sciencedirect.com/science/article/pii/S0006899325005669

From the linked article:

A recent study suggests that **some of exercise’s brain-enhancing benefits can be transferred through tiny particles found in the blood. Researchers discovered that injecting these particles, called extracellular vesicles, from exercising mice into sedentary mice promoted the growth of new neurons in the hippocampus, a brain region important for learning and memory**. The findings were published in the journal Brain Research.

The researchers found that mice that received vesicles from the exercising donors exhibited an approximately 50 percent increase in the number of new, BrdU-labeled cells in the hippocampus compared to mice that received vesicles from sedentary donors or the placebo solution. The findings were consistent across both independent cohorts, strengthening the conclusion that something within the exercise-derived vesicles was promoting cell proliferation.