Close behind are the United Kingdom (42.70), Slovakia (38.15), Albania (36.92), and Iceland (35.59). Surprisingly, even technologically advanced nations like the United States (33.26) and Sweden (30.96) appear on the top 10 list—underscoring the fact that this issue transcends borders and income levels.

Why are these numbers so high?

One of the key drivers behind these rising death rates is increased life expectancy. According to global health data, from 1990 to 2019, the incidence of Alzheimer’s disease and other dementias rose by a staggering 147.95%. As people live longer, particularly in high-income countries, the likelihood of age-related neurological decline becomes more prominent.

In Finland, one of the world’s most elderly populations, this demographic reality collides with genetic predisposition and lifestyle-related risk factors. Despite a robust healthcare system, the country is grappling with how to manage long-term care for those living with neurodegenerative diseases.

The role of diagnosis and reporting

Another significant factor contributing to higher death rates in countries like the UK, USA, and the Netherlands is more accurate diagnosis and cause-of-death reporting. In many lower-income nations, dementia may be underdiagnosed or misattributed to other illnesses, skewing global comparisons.

The United Kingdom, for example, has prioritised dementia awareness and early diagnosis through its National Dementia Strategy. While this increases reported death rates, it also reflects better tracking of the disease rather than a genuine spike in cases alone.

Lifestyle and environmental factors

Diet, physical activity, and cardiovascular health are all tied to brain health. Western nations with high rates of sedentary lifestyles, obesity, and heart disease are also seeing a corresponding rise in dementia-related conditions. Countries like the USA and Ireland, where fast food culture and stress-related disorders are prevalent, face additional burdens in this context.

On the other hand, Sweden and Iceland—despite traditionally health ier lifestyles—are also experiencing increases, likely tied to demographic aging and improved health data systems.