A new study by scientists at the University of Bristol (UK) and the Federal University of São Paulo (Brazil) has found that regular aerobic exercise could substantially lower disease markers associated with Alzheimer’s.
The study, published in the journal Brain Research, highlights the role of physical activity in protecting healthy brain cells and restoring balance in the aging brain. The findings shed new light on the battle against this devastating disorder, raising hope for a potential cure.
The scientists targeted the hippocampus, a key brain region responsible for memory and learning, and examined the impact of aerobic exercise on key Alzheimer’s markers such as amyloid plaques, tau tangles, and iron accumulation in myelin-producing cells known as oligodendrocytes.
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Research discovered that rodents who completed a structured aerobic exercise programs showed: Significant reductions in tau tangles (63 percent), amyloid plaques (76 percent), and iron accumulation (58 percent).
Additionally, they experienced improved brain cell health, (including increased numbers of protective oligodendrocytes), and reduced brain inflammation (between 55 percent and 68 percent), and cell death. Furthermore, the finding found improved communication between brain cells, restoring critical balance in the brain’s function as it ages.
Dr Augusto Coppi, Senior Lecturer in Veterinary Anatomy at the University of Bristol and one of the study’s senior authors, commented that, “Alzheimer’s is a progressive neurodegenerative disorder with no known cure, impacting millions worldwide. While physical exercise is known to reduce cognitive decline, the cellular mechanisms behind its neuroprotective effects have remained elusive — until now. This research highlights the potential for aerobic exercise to serve as a cornerstone in preventive strategies for Alzheimer’s.”
Highlights from the study include:
Incorporating aerobic exercise into one’s daily life could significantly reduce or prevent Alzheimer’s progression.
Public health initiatives should focus on developing exercise programs for aging populations.
The researchers are now preparing human clinical trials to validate the protective effects seen in rodent models. Moreover, they will explore drugs that target iron metabolism and cell death as potential therapeutic approaches for Alzheimer’s disease.
