It was believed that Alzheimer’s disease results when a particular protein randomly detaches itself from brain cells, which are usually connected, and to form tangles. It was thought this happened in many parts of the brain at the same time.

But, new research is challenging this view. The latest research on the subject suggests the protein actually spreads cell by cell through the brain in a predictable way.

The new findings are an important step in the battle against the disease.

Al Jazeera's Tarek Bazley reports.

Source: Al Jazeera