DEMENTIA- Exercise Could Defend Against Alzheimer's Disease. The therapeutic power of movement can combat cognitive decline. Reviewed by Ray Parker

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KEY POINTS-

  • Alzheimer's affects cognitive function and can alter our essence, but exercise offers hope.
  • Research suggests moderate activity can help regain memory functions linked to the hippocampus.
  • Exercise activates pathways that increase BDNF and NGF binding, vital for neuronal plasticity.
  • Irisin, released during exercise, protects the hippocampus by preventing amyloid beta accumulation.
Geralt/ Pixabay
 
Source: Geralt/ Pixabay

The mention of Alzheimer's disease (AD) often sends shivers down people's spines. This debilitating condition affects cognitive function, erodes memory, and can alter our very essence.

Even for those without symptoms, the emotional and financial toll of caring for affected parents, spouses, or other close family members can be devastating. The social costs of AD and other dementias are expected to worsen severely in the decades to come.

 

But what if there were a natural way to halt its progression? Recent studies suggest that regular exercise might be the key.

Understanding Alzheimer's Disease

Before exploring the benefits of exercise, it's essential to understand the adversary we face. Alzheimer's disease is a neurological disorder that predominantly affects the elderly and worsens over time. Factors contributing to Alzheimer's include the buildup of amyloid beta and phosphorylated tau in the brain, increased neuroinflammation, and decreased nerve growth factors (NGF).

 

Physical Exercise: A Natural Remedy?

While the thought of AD can be daunting, there's hope on the horizon. A recent study by Hamed Alizadeh Pahlavani, published in Frontiers in Aging Neuroscience [1], highlights the therapeutic potential of exercise in preventing and treating AD. The research indicates that moderate physical activity can help animals regain memory functions related to the hippocampus and amygdala, two primary brain regions affected by AD.

 

Furthermore, aerobic exercise can prevent the shrinkage of the hippocampus, essential for spatial memory.

So, how does exercise achieve these impressive results? The answer lies in the molecular pathways activated by physical activity. Exercise increases the binding of brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF) to their receptors, TrkB and TrkA. These bindings are vital for cell survival and neuronal plasticity.

 

Moreover, exercise has anti-inflammatory properties that counteract the neuroinflammation associated with AD. Intriguingly, the study highlights the role of irisin, a myokine released during exercise, which protects the hippocampus by preventing amyloid beta accumulation.

Personalizing the Research

While these findings are compelling, what do they mean for everyday people? Imagine your grandmother, an avid gardener, has been diagnosed with early-onset AD. Encouraging her to take daily walks or join a light aerobic exercise class could not only boost her physical health but potentially slow her disease's progression. It's a natural intervention with profound implications.

 

For a friend in their 50s worried about a family history of AD, incorporating regular exercise into their routine could be a proactive step to protect their mental well-being.

What Is the Next Step?

While exercise shows promise as a treatment for AD, it's just one piece of the puzzle. The most effective strategy for preventing AD is a holistic approach, encompassing exercise, a balanced diet, mental stimulation, and regular medical check-ups.

 

Yet, the research underscores that exercise's benefits extend beyond mere weight loss or muscle gain. It's a formidable weapon against one of today's most pressing health challenges. Regardless of age or current activity level, it's never too late to embrace exercise and reap its cognitive rewards.

Let's harness the healing power of movement for a brighter, healthier future.

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