Healthier Lifestyle May Prevent 1 in 3 Cases of Dementia

From losing weight to quitting smoking, your New Year’s resolutions may have a larger impact on your brain health than you ever imagined. A recent study found that 35% cases of dementia are preventable through lifestyle changes starting in childhood.Healthier Lifestyle May Prevent 1 in 3 Cases of Dementia

Learn more about this study and the power of lifestyle choices in dementia prevention.

Lifestyle Choices and Their Impact on Dementia Risk

Over one-third of all dementia cases may be preventable if people would make positive lifestyle choices that positively affect brain health, according to a recent report. Researchers believe that encouraging public health strategies encouraging people to be healthy, like regular exercise, protecting hearing and staying in school, can have a significant impact on the global numbers of dementia.

The study, published in The Lancet, examined previous research linking risk factors for dementia throughout the lives of participants. Taking existing data, researchers calculated the potential impact that reducing risk factors could have on the global dementia epidemic.

Co-author of the study, Dr. Lon Schneider, a professor of psychiatry, neurology, and gerontology at the University of Southern California said, “Society must engage in ways to reduce dementia risk throughout life and improve the care and treatment for those with the disease. This includes providing safe and effective social and health-care interventions in order to integrate people with dementia within their communities. Hopefully, this will also ensure that people with dementia, their families and caregivers, encounter a society that accepts and supports them.”

9 Risk Factors for Dementia

The researchers found that avoiding nine targeted risk factors would cut the worldwide prevalence of dementia by 35%.

The nine risk factors for dementia are:

  1. Discontinuing education before the age of 15
  2. Untreated hearing loss in middle age
  3. Smoking after the age of 65
  4. High blood pressure
  5. Obesity
  6. Depression
  7. Physical inactivity
  8. Social isolation
  9. Diabetes in adults over 65

Specifically, the report found that if all young people stayed in school past the age of 15, the global number of dementia cases would be reduced by 8%. If all middle-aged people with hearing loss were treated, dementia would decrease by 9%. Finally, if all smokers older than 65 quit smoking, dementia would decrease by 5%.

While more research is needed to understand how and why each of these factors contributes to dementia, studies have shown a clear link between these conditions and dementia risk.

Researchers acknowledge the limitations of the study, including that the study did not consider diet and alcohol use in their data, two factors that could also be a risk factor for dementia.

Have you seen a link between dementia and these risk factors? Do you think lifestyle choices could play such a large role in the prevalence of dementia on a global scale? We’d like to hear your thoughts in the comments below.

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Please leave your thoughts and comments

  • I’m very disappointed in this article because you left off the most important lifestyle contributor to Alzheimer’s — poor sleep. Just Google Sleep and Alzheimer’s and you’ll learn why.

    “As your body sleeps, your brain is quite actively playing the part of mental janitor. It’s clearing out all of the junk that has accumulated as a result of your daily thinking. … The lymphatic system serves as the body’s custodian: Whenever waste is formed, it sweeps it clean. The brain, however, is outside its reach — despite the fact that your brain uses up about 20 percent of your body’s energy. How, then, does its waste – like beta-amyloid, a protein associated with Alzheimer’s disease – get cleared? What happens to all the wrappers and leftovers that litter the room after any mental workout?” It’s cleared by what researchers now call the “glymphatic” system. (

    Why is it that Alzheimer’s disease was only discovered in 1906, about 25 years after Thomas Edison invented the lightbulb? On average, we now get 1-2 hours less sleep a night than we did 150 years ago and 38 minutes less than we did as little as 10 years ago. I believe that it has to do with the effect that artificial lights has on sleep, the circadian rhythm, and melatonin, knowing that the lightbulb was invented in 1879. And the fact that Alzheimer’s is getting worse seems to be related to the recent move toward energy-saving compact fluorescent and LED bulbs with more bluish light. (

    Recent studies show that brain cells actually shrink in size during deep sleep to make is easier for cerebral fluid to flush out toxins, so any credible article about lifestyle changes to help prevent Alzheimer’s disease MUST include sleep. (

  • It’s a great blog. It’s true that a healthy lifestyle can ward off several symptoms of dementia or related issues in seniors. However, aging does bring negative effects regardless of how well-balance and active your life is.

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