The results showed that 75 percent of the men and 83 percent of the women drank more than three cups of coffee a day.
The researchers conducted phone interviews with the test subjects when they were 74-years-old.
They found that each year of increasing age was associated with declines in thinking abilities regardless of gender.
They discovered that middle age coffee consumption was not protective against cognitive decline or dementia.
They found that heart disease, diabetes and dissatisfaction with life were significantly associated with lower cognitive performance.
The findings were reported in the American Journal of Clinical Nutrition.