It May Be Possible To Avoid Developing Dementia


It May Be Possible To Avoid Developing Dementia


Alzheimer’s Disease is the most common type of dementia. It slowly kills brain cells and is the fifth-leading cause of death for Americans age 65 and over.

But contrary to popular belief, steps can be taken to slow it down.

“People think Alzheimer’s is an entirely genetic disorder, but most often, it’s not,” said Dr. Charles Duffy, a neurologist at Penn State Health Milton S. Hershey Medical Center.  


The disease

Nearly all cases are late-onset. That means people don’t develop symptoms until age 65 or later. By contrast, people with the rarer type of Alzheimer’s -- early-onset -- may see symptoms as early as age 40.

“The two biggest risk factors for developing Alzheimer’s are a person’s age and prior head injury, including trauma or strokes,” Duffy said.

Symptoms may include trouble finding car keys, handling money or managing complex situations like driving a car or cooking a meal. Other warning signs include vision changes, difficulties finding words, repeating statements or questions, poor judgement, a loss of spontaneity or a change in personality.

If a loved one experiences any symptoms, ask them to follow up with a doctor immediately. While no cure for Alzheimer’s exists, medications can treat its symptoms and slow its progression. “It’s heartbreaking for me to see people who don’t get diagnosed until they’ve lived with Alzheimer’s for years,” Duffy said.

Some people avoid seeing their doctor because they don’t want to know their diagnosis. Others may not believe they have Alzheimer’s because the condition itself causes a lack of self-awareness. “But the symptoms of Alzheimer’s mimic other conditions, and once people see their doctor, they might find they have a highly treatable disorder that can be reversed,” Duffy said

When left unrecognized, Alzheimer’s can bring potential serious consequences. People with Alzheimer’s may get into a car accident, wander off into an unsafe situation, such as into traffic or a body of water, or take a dangerous amount of medications.


What you can do

Diet and exercise provide a powerful one-two punch in preventing Alzheimer’s. People should walk for at least 60 minutes a day, three to five days per week.

When it comes to diet, “Eating fresh fruits and vegetables, nuts, fish and whole grains have a significant impact on delaying the onset and reducing the rate of progression of dementia,” Duffy said.

Getting enough sleep — seven to eight hours a night — also helps. So too does staying mentally stimulated. Talking with friends and neighbors, reading, doing word puzzles and taking part in other activities all help keep the mind active.

Building a relationship with a primary care doctor can also help people avoid or manage conditions such as heart disease, diabetes or high blood pressure. “These conditions can predispose older adults to developing disorders like Alzheimer’s,” Duffy said.


Caring for a loved one with Alzheimer’s

People with Alzheimer’s thrive when they follow a routine. So, people supporting a family member with Alzheimer’s should provide structure and safety:

  • Keep medications, matches and lighters out of reach.
  • Remove throw rugs and other tripping hazards.
  • Turn down the temperature on the water heater to avoid burns.
  • Offer simple instructions.
  • Develop a schedule with other loved ones to ensure the person with Alzheimer’s doesn’t wander.


The science

New research has been publised demonstrating that a healthy lifestyle can help reduce the risk of dementia even if there is a genetic risk. Within people with a higher genetic risk of dementia, those who followed a healthy lifestyle were found to be at 32% lower risk than those with an unhealthy lifestyle. 

The study had a sample size of 196,383 adults over 60 years old, and over an 8 year follow up period those with a high genetic risk and an unhealthy lifestyle were found to be almost 3 times as likely to develop dementia. Those who were more likely to develop dementia reported eating an unhealthy diet that was high in sugar and salt, smoked cigarettes, drank alcohol, and did not engage in regular exercise.

Four main signs of a healthy lifestyle were examined and compared to an unhealthy lifestyle: Those more likely to develop dementia reported eating an unhealthy diet that was high in sugar and salt, smoked cigarettes, drank alcohol, and were largely sedentary not engaging in regular physical activity. 


An association was also found between dementia and exposure to specific drugs, as well as drinking artificially sweetened beverages.



Lourida, I., Hannon, E., Littlejohns, T., Langa, K., Hyppönen, E., Kuzma, E. and Llewellyn, D. (2019). Association of Lifestyle and Genetic Risk With Incidence of Dementia. JAMA.

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