Alzheimer’s Disease & High Elevation: Prevention, Risk Factors, and Treatment

What Is Alzheimer’s Disease?

Alzheimer’s disease is a progressive neurological disorder that damages brain cells and affects communication between different areas of the brain. Over time, it can impair memory, reasoning, language, judgment, and the ability to perform everyday activities.

Symptoms often develop gradually and may initially be mistaken for normal aging. Early signs can include:

• Frequently forgetting recently learned information
• Difficulty following conversations or instructions
• Misplacing items and being unable to retrace steps
• Trouble planning or solving problems
• Changes in mood, personality, or behavior
• Difficulty completing familiar tasks

As the disease progresses, individuals may require increasing levels of support with daily activities and personal care.

Understanding Risk Factors

While researchers have not identified a single cause of Alzheimer’s disease, several factors are known to increase risk.

Age: Age is the strongest known risk factor. Most people diagnosed with Alzheimer’s are age 65 or older, although younger-onset Alzheimer’s can occur in some individuals.

Family History and Genetics: Having a parent or sibling with Alzheimer’s disease may increase a person’s risk. Certain genetic factors are associated with a greater likelihood of developing the condition, though genetics alone do not determine whether someone will develop Alzheimer’s.

Cardiovascular Health: Healthy blood flow is essential for brain function, making cardiovascular wellness an important part of cognitive health. Conditions that affect the heart and blood vessels can also impact brain health. Risk factors include high blood pressure, high cholesterol, diabetes, obesity, smoking, and physical inactivity.

Head Injuries: A history of moderate or severe traumatic brain injury may increase the risk of developing dementia later in life.

Sleep Disorders: Growing evidence suggests that poor sleep quality and untreated sleep disorders may contribute to cognitive decline. Sleep plays a critical role in clearing waste products from the brain and supporting memory consolidation.

Can Alzheimer’s Disease Be Prevented?

There is currently no guaranteed way to prevent Alzheimer’s disease. However, research suggests that certain lifestyle habits may help reduce risk and support long-term brain health.

Stay Physically Active: Regular exercise improves blood flow to the brain, supports cardiovascular health, and may help reduce inflammation associated with cognitive decline. Adults should aim for at least 150 minutes of moderate physical activity per week when medically appropriate. In Big Bear, activities such as walking, hiking, cycling, and snowshoeing can provide excellent opportunities to stay active year-round.

Follow a Brain-Healthy Diet: Nutrition plays an important role in overall health and cognitive function. Many experts recommend dietary patterns that emphasize fruits and vegetables, whole grains, fish and lean proteins, nuts and legumes, and healthy fats such as olive oil. Limiting highly processed foods, excess sugar, and saturated fats may also support brain health.

Keep Your Mind Engaged: Mental stimulation may help strengthen cognitive reserve, which is the brain’s ability to adapt and compensate for age-related changes.

Consider activities such as reaching, learning a new skill or language, playing an instrument, solving a puzzle or taking a class.

Stay Socially Connected: Social engagement has been linked to better cognitive outcomes in older adults. Maintaining relationships, participating in community activities, and staying connected with friends and family can support both emotional and cognitive well-being.

Prioritize Sleep: Most adults need seven to nine hours of quality sleep each night. Persistent snoring, excessive daytime fatigue, or pauses in breathing during sleep should be discussed with a healthcare provider, as these may indicate sleep apnea.

Living at High Elevation and Brain Health

Big Bear’s elevation of approximately 6,700 feet creates a unique environment where oxygen levels are lower than at sea level. Most healthy individuals adapt well to these conditions. While researchers continue to study the relationship between oxygen levels, sleep quality, cardiovascular health, and cognitive function, there is currently no clear evidence that living at Big Bear’s elevation directly increases the risk of Alzheimer’s disease.

However, conditions that affect oxygen delivery to the brain—including sleep apnea, heart disease, and lung disease—can impact cognitive health and should be evaluated and treated when appropriate.

Sleep Apnea May Have Greater Impact at Elevation: Sleep-disordered breathing can become more pronounced at higher elevations. Some individuals experience increased nighttime oxygen fluctuations while sleeping in mountain environments.

Because untreated sleep apnea has been associated with memory problems, cognitive decline, and a higher risk of developing dementia, evaluation and treatment are especially important for mountain residents who experience loud snoring, gasping during sleep, excessive fatigue during the day, morning headaches and trouble concentrating.

Cardiovascular Health Remains Critical: Maintaining healthy blood pressure, cholesterol levels, and blood sugar becomes even more important when living at elevation. Conditions that impair oxygen delivery or circulation can affect both brain and cardiovascular health. Regular checkups with a healthcare provider can help identify and manage these conditions before complications develop.

Hydration Matters: The mountain climate can contribute to dehydration due to lower humidity and increased fluid loss through respiration. Even mild dehydration may temporarily affect concentration, memory, and mental clarity.

Residents and visitors alike should make hydration a daily priority, particularly during physical activity and warmer weather.

Treatment Options for Alzheimer’s Disease

Although there is currently no cure for Alzheimer’s disease, treatment options continue to improve.

Medications: Several medications may help manage symptoms or slow disease progression in certain individuals. These treatments work differently depending on the stage of disease and a person’s overall health.A healthcare provider can help determine whether medication may be appropriate and discuss potential benefits and risks.

Cognitive and Supportive Therapies: Structured routines, memory aids, occupational therapy, and cognitive support programs can help individuals maintain independence for as long as possible. Support groups and educational resources can also be valuable for family members and caregivers.

Managing Other Health Conditions: Treating conditions such as high blood pressure, diabetes, depression, hearing loss, and sleep disorders may help preserve overall function and quality of life. A comprehensive care plan often involves collaboration among primary care providers, neurologists, therapists, caregivers, and community support services.

When Should You Seek Medical Evaluation?

It is important to seek medical evaluation if memory problems begin interfering with daily activities or if family members notice significant changes in thinking, judgment, behavior, or personality.

Early evaluation can help identify treatable causes of memory problems and establish an Alzheimer’s diagnosis sooner.

Not all memory concerns are caused by Alzheimer’s disease. Vitamin deficiencies, medication side effects, sleep disorders, depression, thyroid problems, and other medical conditions can sometimes cause symptoms that resemble dementia.

Your general practitioner or internist is a good first point of contact if you suspect you or someone you love is showing signs of Alzheimer’s.

Check out our list of trusted providers to schedule an appointment.

Frequently Asked Questions about Alzheimer’s Disease