Usually when a person is diagnosed with vascular dementia, it is common for the caregiver to try and find out as much as possible about the life expectancy of their loved one. Life expectancy of vascular dementia varies from one person to another and is primarily dependent on the person's health, his or her age, and the cause for the dementia. In case the vascular dementia is severe, then life expectancy will range from 5 years to 6 years. In case the dementia is not severe, then life expectancy will be higher than 5 to 6 years.
It has also been seen through research that life expectancy of vascular dementia in men is lower, people from lower strata of society and people who do not do well in neuro-psychological tests. In such cases, the life expectancy is reduced by fifty percent.