Alzheimer?s disease is a condition that affects the brain, changes
the way people act and behave, and makes it difficult for them to
remember. Lots of research has shown that older adults who get more
brain exercise are better able to fight this disease. Why does brain
exercise protect against Alzheimer?s disease? One hypothesis (idea)
is that brain exercise makes the right hemisphere (side) of the brain
stronger, and this stronger right hemisphere helps protect people
against Alzheimer?s disease. We ran a study to test this. Older adults
performed a computer task which allowed us to check whether the
right side of the brain was stronger than the left side. We found that
people who get more brain exercise had stronger right hemispheres