Brain health is influenced not only by genetics or traditional medical factors like blood pressure, blood sugar, or cholesterol. Recent studies suggest that the way we experience life, the values that guide us, and a sense of purpose can play a significant role in maintaining cognitive function and preventing neurodegenerative diseases.
Dementia is increasingly common in modern society, especially among older adults. Improved diagnostic methods have helped identify cases earlier, but the condition still has a major impact on individuals and their families. Symptoms include memory loss, difficulties with communication, mood changes, and challenges in performing daily activities, often leading to full dependence on others over time.
Traditionally, dementia prevention has focused on controlling physical risk factors such as blood pressure, diabetes, and cholesterol, as well as maintaining physical activity, mental exercises, and social engagement. However, new research highlights the importance of psychological and emotional factors as well.
A 2025 study published in the American Journal of Geriatric Psychiatry examined the protective role of having a sense of purpose in life. Researchers followed more than 13,000 adults over the age of 45 for 15 years, analyzing the relationship between life satisfaction and cognitive health.
The results showed that participants reporting a stronger sense of purpose and meaning in life had about 28% lower risk of developing cognitive impairments, including dementia. Experts emphasize, however, that this relationship is correlational, not necessarily causal.
Neurologists note that it is still unclear whether a sense of purpose directly protects the brain, or if people with better cognitive function simply feel more fulfilled. Dr. Ronda Voskhul from the University of California, Los Angeles, who was not involved in the study, highlights that further research is needed to clarify the connection.
Regardless, researchers agree that living with meaning, maintaining a positive outlook, and actively participating in activities that provide value and belonging can significantly contribute to mental and emotional well-being. Combined with a healthy lifestyle, these factors may help preserve brain function even in later life.
