Eating purple-colored fruit may prevent Alzheimer's and Multiple Sclerosis and Parkinson's Disease, according to a new study by the University of Manchester.
Researchers say fruit such as blueberries absorb harmful iron compounds in the body that produce toxins. Certain toxins are believed to cause degenerative diseases.
The new study is the first to show a link between the wrong form of iron and many diseases. It also found that other brightly colored fruits and vegetables may also be beneficial.
"We normally think of iron as something that is good for us. And, in the right form, it is," lead researcher professor Douglas Kell told the London Daily Mail.
"But in the wrong form it is not good for you because what it does is react with things that are always knocking around in the body to make something very nasty indeed," he continued.
The British Alzheimer's Trust says there's no evidence that iron causes the disease. The trust said regular exercise and a healthy diet may cut the chances of getting Alzheimer's.
The study appeared in the Journal Archives of Toxicology.