Have you heard? Scientists have discovered a drug that cures Down syndrome with a single injection! Only they haven't. They've cured Down syndrome in mice with a single injection. Except... well... they haven't really done that, either.
Researchers have discovered that a protein that is a major factor in the onset of Alzheimer's disease can also be found in the eyes of people with Down Syndrome. This link could allows doctors to test for Alzheimer's earlier.