A recent study published in the journal Science Advances found differences in blood metabolites and immune cell profiles between adults who exercised regularly and those who were sedentary. These differences involved glucose and lipid metabolism, metabolites consistent with fatty acid oxidation (FAO), antioxidant-related metabolites, and immune signaling.
Some immune cell analyses suggested weaker inflammatory signaling among exercisers, but the study did not establish a reduction in systemic inflammation. The findings identify candidate biomarkers and regulatory pathways for future investigation.
The health benefits of regular physical activity for immune function and disease prevention are well established. Yet the biological mechanisms underlying these protective effects are unclear. Much of the previous mechanistic research involved short-term studies conducted in controlled settings or among selected populations, highlighting the need for further research in real-world contexts.
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