New Generation at Relatively Lower Risk of Dementia, Study Reveals
The younger generations (born in more recent decades) are relatively more protected against dementia compared to older generations, according to a new study.
Researchers at the University of Queensland analyzed data from around 62,437 older adults born between 1890 and 1948. They observed that dementia rates among individuals aged 75–80 were lower in more recent generations compared to earlier ones.
For example, in the United States, among people aged 81–85 who were born between 1890 and 1913, the dementia rate was approximately 25.1%. In contrast, among those born between 1939 and 1943, the rate dropped to 15.5%—a notable difference of about 10 percentage points.
The researchers suggested several factors that may have contributed to this relative protection in newer generations. Improved education standards and greater access to education, particularly for women, have enhanced cognitive resilience.
Better treatment and control of conditions such as high blood pressure, heart disease, and diabetes have also had positive effects on brain health. In addition, access to clean water, improved nutrition, public health services, and better living conditions have reduced exposure to harmful pathogens, viruses, and environmental risks.
Furthermore, earlier diagnosis and treatment, improved care facilities, vaccinations, and other medical interventions have shown promising outcomes. For instance, individuals who received the shingles vaccine were found to have about a 20% lower risk of developing dementia.
This groundbreaking research highlights how medical advancements, education, and lifestyle improvements have helped reduce the prevalence of dementia in recent generations, offering hope for the future.
