Researchers Develop New Test to Predict Alzheimer's Disease (2/2)

Now, a much simpler physical test to predict Alzheimer's risk has been developed. Researchers found that trouble with the sense of smell can be one of the first signs of Alzheimer's. Using this information, they developed a test in which people were asked to identify twelve familiar smells. These smells included cinnamon" class="hjdict" word="cinnamon" target=_blank>cinnamon, black pepper, chocolate, paint thinner, and smoke.

The study continued for 5 years. During this period, the same people were asked to take several tests measuring their memory and thought abilities. 50% of those who could not identify at least four of the smells in the first test had trouble with their memory and thinking in the next 5 years.

Another study has shown a possible way to reduce a person's chances of developing Alzheimer's disease in old age. Researchers in Chicago, Illinois found that people who use their brains more often are less likely to develop Alzheimer's disease. Those who read a newspaper, or play chess or word games are about 3 times less likely to develop the condition.

Researchers say they still do not know what causes Alzheimer's disease. But they say these findings might help prevent the disease in the future.