Are Omega 3 + B vitamins - the dynamic duo for dementia prevention? There are many factors that increase a person’s risk for dementia, such as age, but very few that are ‘disease modifying’. A risk factor such as age is obviously not modifiable. You can live to any age without getting Alzheimer’s. That means that Alzheimer’s is not a natural function of age. Age might ‘predict’ increased risk but it tells you nothing about how to prevent it.