Understanding Dementia: Early Prevention Backed by Science

Dementia isn’t just a natural part of aging—early prevention is possible with the right knowledge and scientifically backed strategies.

Dementia: A Growing Global Concern

Dementia is one of the fastest-growing global health challenges, especially in aging societies. According to the World Health Organization (WHO), over 55 million people worldwide were living with dementia in 2023—a number expected to rise to 78 million by 2030 if no effective preventive measures are taken.

While many still believe dementia is an unavoidable part of aging, recent research has significantly shifted that perspective, revealing that many risk factors are preventable or manageable.

What Is Dementia?

Dementia is not a single disease, but a group of symptoms that impair memory, thinking, reasoning, and daily functioning. It most commonly affects older adults but can also occur in middle age.

Common types of dementia include:

• Alzheimer’s disease: The most common form, accounting for 60–70% of cases, caused by abnormal protein accumulation in the brain.

• Vascular dementia: Caused by impaired blood flow to the brain.

• Mixed dementia: A combination of multiple forms of dementia in one patient.

Preventable Risk Factors

According to the Lancet Commission (2020), at least 12 modifiable risk factors can help reduce dementia risk:

• Hearing loss in midlife

• Low education level in early life

• Smoking

• Depression

• High blood pressure

• Excessive alcohol use

• Obesity

• Diabetes

• Air pollution exposure

• Physical inactivity

• Social isolation

• Brain injury

Addressing these factors could reduce the risk of dementia by up to 40%, proving that prevention is not only possible but highly effective.

Common Misconceptions

Many people mistakenly think dementia is just “memory loss” or “an old person’s disease.” In reality, dementia affects more than memory—it can influence mood, behavior, personality, and the ability to perform daily tasks.

There’s also a lesser-known condition called Young-Onset Dementia, which can occur as early as age 40. It is often misdiagnosed as depression or psychiatric illness due to lack of awareness.

Why Early Screening Matters

Early detection through brain screening or cognitive assessments can help:

• Plan long-term care strategies
• Modify lifestyle to slow progression
• Access treatment and support services on time

Common tools include the MMSE (Mini-Mental State Examination) and MoCA (Montreal Cognitive Assessment)—widely used to assess early cognitive changes.

In Thailand, individuals can access dementia screening at general or regional hospitals, particularly in neurology or geriatric clinics. Initial assessments may be conducted by general practitioners and referred to specialists if needed.

Government and private programs—such as those by NHSO and community health centers—also offer dementia screening services for the elderly.

Dementia Can't Be Cured—But It Can Be Slowed

While dementia is not currently curable, early detection and holistic care can significantly delay cognitive decline.
Key strategies include: Regular exercise, Balanced diet, Quality sleep, Mental stimulation, Emotional and social well-being

At The Longevist, we believe preventive healthcare is the key to a longer, healthier life. We are committed to walking alongside you—every step of the way—in caring for your brain and overall health.

References

• Livingston, G. et al. (2020). Dementia prevention, intervention, and care: 2020 report of the Lancet Commission. The Lancet, 396(10248), 413-446.

• Nasreddine, Z.S. et al. (2005). The Montreal Cognitive Assessment, MoCA: A brief screening tool for mild cognitive impairment. Journal of the American Geriatrics Society, 53(4), 695-699.

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