According to the information given through a study, consumption of orange and grapefruit on a daily basis can reduce the risk of dementia by 23 percent.
As per the researchers, daily intake of any citrus fruits such as oranges, grapefruits, lemons or limes can cut the chances of developing the incurable brain condition by almost a quarter.
The findings suggested that the citric acid contains a chemical nobiletin, which in animal tests has shown to slow or reverse impairment of memory.
The team analysed more than 13,000 older adults for up to seven years to see how many developed dementia.
The results suggested that a daily intake of citrus were 23 percent less likely to develop dementia than those eating it less than twice a week.