Can Exercise Delay or Prevent Alzheimer’s Disease? In this video, Larry King interviews guest Dr. John Ratey about whether or not exercise can help prevent Alzheimer's disease. Ten interesting facts and figures about Alzheimer's disease.  The two discuss an international study that found three factors that could help prevent the development of Alzheimer's disease: being at an optimal weight, continuing to learn throughout a person's life, and exercise. It's thought that regular exercise can stall the symptoms of Alzheimer's disease for up to 10 years and maybe even prevent it from developing in the first place. Read about 10 warning signs of Alzheimer’s disease here.  Alzheimer's News Today is strictly a news and information website about the disease. It does not provide medical advice, diagnosis or treatment. This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or another qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.  
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  1. To improve overall health and reduce the risks of developing Alzheimer’s or any disease, focus on the 3 pillars of health: exercise, nutrition, and sleep. Exercise and nutrition is important to provide enough oxygenated blood to brain cells, and one role of sleep is to flush away byproducts of cell metabolism.

    Just as the Lymphatic System helps rid the body of toxins and waste, the Glymphatic System does the same for the brain. Sleep plays a strong role, because as your body sleeps, your brain is acting as mental janitor, clearing out all of the junk that accumulates from daily thinking. During the deepest stages of sleep, neurons actually shrink in size, allowing cerebral fluid to circulate faster to flush out the beta amyloid protein and tau that otherwise can build up as plaque and contribute to Alzheimer’s disease.

    We humans tend to sleep less today than we did before the invention of the electric light bulb, and we sleep less as we age. We also produce less of the sleep-inducing hormone Melatonin with age, which is why my wife and I take supplements at bedtime.

    See “Ability to Remove Alzheimer’s Disease Protein from the Brain Slows with Age” (, including the comments.

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