How to prevent dementia?

Dementia risk can’t be eliminated, but several modifiable factors may reduce it. The discussion highlights cardiovascular and overall brain health as practical targets:

• Exercise regularly: Aim for roughly 150–200 minutes of moderate “zone 2” cardio weekly—an intensity where you can talk, but only just. Exercise supports circulation and brain health. 1
• Protect your head: Avoid significant head impacts, especially repeated injuries. 2
• Support vascular and metabolic health: Address risks such as high blood pressure, diabetes, and high LDL cholesterol; these are among the modifiable dementia risk factors discussed. 3
• Get enough sleep: The discussion notes that consistently sleeping fewer than six hours is associated with increased risk. 4
• Maintain a nutrient-dense diet: A Mediterranean- or MIND-style pattern emphasizes seafood, vegetables, berries, and whole grains. The guest cautions that evidence does not establish one required diet; overall diet quality and adequate—not excessive or insufficient—energy intake matter. 5 6
• Keep sensory and social engagement in view: Hearing loss, vision loss, and social isolation are also discussed as modifiable risks; seek appropriate attention for sensory problems and maintain social connection. 7
• Stay mentally and physically engaged: Learning challenging skills may be worthwhile, though the discussion does not present cognitive exercises as a guaranteed prevention method. 8

The overall emphasis is on managing several risks together rather than relying on a single preventive measure. 9