In recent news, veteran actor Gene Hackman tragically passed away, highlighting how having Alzheimer’s disease could have contributed to his death. Another actor, Bruce Willis, was also diagnosed with frontotemporal dementia in 2023.
These two conditions are types of dementia, which involves a decline in cognition — the mental processes that help us remember, learn new things, communicate, make decisions, solve problems and interact socially. Dementia can disrupt a person’s entire way of thinking and functioning, impacting relationships, independence and overall quality of life.
Dementia is not a single disease but a group of symptoms caused by various conditions affecting the brain. Dementia occurs when brain cells are damaged, affecting memory, thinking, behavior, and the ability to perform everyday activities. It is more common in older adults, but it is not a normal part of aging.
There are different types of dementia:
Alzheimer’s disease — The most common type, accounting for 60-80 percent of cases. It is caused by abnormal protein buildup in the brain that leads to nerve cell death.
Vascular dementia — Caused by reduced blood flow to the brain, often after a stroke or due to high blood pressure.
Lewy body dementia — Characterized by abnormal protein deposits (Lewy bodies) in brain cells, leading to changes in thinking, movement, and behavior.
Frontotemporal dementia – Affects the frontal and temporal lobes of the brain, leading to personality changes, difficulty speaking, and poor decision-making.
The symptoms of dementia vary depending on the type and stage but generally include:
• Memory loss, especially recent events
• Difficulty finding the right words
• Trouble planning or solving problems
• Getting lost in familiar places
• Personality changes (e.g., mood swings, withdrawal)
• Increasing confusion and forgetfulness
• Difficulty recognizing family members
• Trouble managing finances or daily tasks
• Sleep disturbances and mood changes (e.g., depression, anxiety)
• Hallucinations or delusions
•Severe memory loss, including forgetting close family members
• Loss of ability to communicate
• Difficulty swallowing and walking
• Total dependence on caregivers
Dementia occurs due to damage to brain cells, which disrupts the communication between these cells, or neurons. Some causes include:
•Neurodegenerative diseases (e.g., Alzheimer’s, Parkinson’s)
• Stroke or vascular diseases affecting blood supply to the brain
• Head injuries from accidents or repeated trauma (e.g., in athletes)
• Infections (e.g., HIV, syphilis)
• Nutritional deficiencies (e.g., vitamin B12 deficiency)
• Toxins such as long-term alcohol abuse
It’s worth noting that some conditions can cause dementia-like symptoms but may be reversible with treatment. These include certain infections, thyroid issues, low blood sugar, dehydration, and nutritional deficiencies. Other factors, like interactions between medications, chronic alcohol use, and sleep apnea, can also lead to symptoms that look like dementia but may improve once the underlying issue is treated.
There is no single test for dementia, but early diagnosis is crucial for managing symptoms and planning care. Doctors use several methods, including:
Medical history — Checking for risk factors like family history or past illnesses.
Cognitive tests — Assessing memory, problem-solving, and language skills.
Brain imaging — CT scans, MRI, or PET scans to detect changes in the brain.
Blood tests — Checking for vitamin deficiencies, thyroid problems, or infections.
While some risk factors like age and genetics cannot be changed, you can reduce your risk of dementia by adopting a healthy lifestyle:
Exercise regularly — Helps maintain brain health and blood flow.
Eat a balanced diet — A diet rich in fruits, vegetables, fish and healthy fats.
Keep your brain active — Reading, solving puzzles and learning new skills.
Manage chronic conditions — Control high blood pressure, diabetes and cholesterol.
Get enough sleep — Poor sleep increases dementia risk.
Stay socially engaged — Interaction with others keeps the brain stimulated.
Address hearing loss — Using hearing aids or other hearing interventions can improve cognitive outcomes and possibly delay cognitive decline.
Caring for a loved one with dementia can be challenging. Caregivers should also take care of their own health and seek support groups when needed. Here are some strategies to help caregivers:
Create a routine — This reduces confusion and anxiety.
Simplify tasks — Break tasks into simple steps and offer gentle reminders.
Ensure safety — Remove hazards, use labels and consider installing grab bars.
Encourage independence — Let them do tasks they can still manage.
Provide emotional support — Patience and reassurance are key.
If you know someone who is a caregiver for a person with dementia, showing up for them and sometimes giving them a break is vital, so they can continue to show up for those dependent on them.
There is no cure for dementia, but some therapies can slow progression and help manage symptoms such as:
Cholinesterase inhibitors (e.g., donepezil, rivastigmine), which help improve memory and thinking
Memantine — Protects brain cells from further damage
Antidepressants or antipsychotics — May be used for mood or behavioral problems
Non-drug approaches like music therapy, pet therapy, and reminiscence therapy can also improve quality of life
If you or a loved one show signs of memory loss or confusion, seek medical advice early, and only take medication that is prescribed by your doctor. With the right care and support, people with dementia can delay its progression and still enjoy meaningful lives.