BT.com | Lowering toxic by-products in fruit flies gives new insight into Parkinson's and Alzheimer's Alzheimer's Society However, they only represent a very simplistic version of the condition – behavioural changes seen in fruit flies, such as slow crawling and climbing, are very different from the symptoms people with Alzheimer's disease experience. 'It's estimated that ... Fruit fly experiment 'improves' symptoms of Alzheimer's and Parkinson's disease |