Neuroscience

New study on development of Parkinson's disease is 'on the nose'

The loss of a sense of smell is known to be one of the earliest signs of Parkinson's disease (PD) and can even appear years before the characteristic tremors and loss of motor function are seen. Some scientists believe that ...

Alzheimer's disease & dementia

Late, but not too late—screening for olfactory dysfunction

In a large population-based study of randomly selected participants in Germany, researchers found that participants aged 65-74 years with olfactory dysfunction showed impaired cognitive performance. Interestingly, this strong ...

Neuroscience

Elderly who have trouble identifying odors face risk of dementia

A long-term study of nearly 3,000 adults, aged 57 to 85, found that those who could not identify at least four out of five common odors were more than twice as likely as those with a normal sense of smell to develop dementia ...

Alzheimer's disease & dementia

Findings could lead to early diagnosis of Alzheimer's

Korean researchers have identified the cause of olfactory dysfunction in the early stage of Alzheimer's diseases. It is expected to be used in early diagnosis of Alzheimer's disease and therapeutic research.