There are currently around 35 million people living with dementia worldwide, a number that is projected to nearly triple to 115 million by 2050. The worldwide costs of dementia are estimated to be $604 billion in 2010, which would make dementia one of the world's largest economies. Eating a diet with a medium or high proportion of fruits and vegetables in midlife may reduce risks of dementia and Alzheimer's disease in later life by 27% and 40% respectively according to one study.