Health research links lifestyle and biological factors to dementia risk

Recent scientific studies have identified several key factors associated with the risk of cognitive decline and dementia. Research involving 1,647 participants from the Framingham Heart Study suggests that adherence to the MIND diet—a hybrid of Mediterranean and DASH eating patterns emphasizing leafy greens and berries—is linked to a slower reduction in gray matter in the brain.

Physical health also plays a significant role. An evaluation of 80 studies by Curtin University found that sarcopenia, the progressive loss of muscle mass and strength, is associated with a 42 percent increase in dementia risk. Similarly, regular strength training and handgrip strength have been identified as indicators of lower mortality risk and improved mental health.

Biological transitions also impact cognitive longevity. Studies indicate that menopause occurring before age 40 is associated with a 47 percent higher risk of dementia compared to those starting between ages 50 and 52. While these studies show strong statistical correlations, researchers note that direct causality remains unproven in several of these observations.