This study will determine whether glucose facilitates memory in healthy elderly people and
those with Parkinson's disease.
Subjects fast for 8 hours before receiving a test to determine their blood glucose levels.
Following this test, subjects are randomized to receive either a glucose or saccharin
sweetened drink. A series of memory tests and an additional 3 blood glucose level tests are
administered approximately 15 minutes later. A minimum of 1 week afterward, the subjects
return and receive the alternate sweetener followed by additional memory tests.
- Three groups of subjects are eligible for this study: Healthy young adults between
ages 18 and 30; Healthy elderly adults between ages 60 and 90; AND Anyone diagnosed
with Parkinson's disease
- Prior surgery to remove part of the stomach
- Diabetes, Addison's, or Cushing's diseases