article_snippet: The telltale signs of Alzheimer’s can be seen in people as young as 20, research shows.
article_snippet: The ‘unprecedented’ finding suggests that the disease starts to eat away at the brain half a century before symptoms develop.
article_snippet: Tests showed that beta-amyloid, the toxic protein that clogs up the brain in Alzheimer’s, had started building up in people as young as 20.
article_snippet: beta-amyloid, the toxic protein that clogs up the brain in Alzheimer’s, had started building up in people as young as 20 had been thought that the damage to the brain started just 15 or 20 years before the disease takes hold.
article_snippet: Lead researcher Professor Changiz Geula said: ‘Discovering that amyloid begins to accumulate so early in life is unprecedented.
highlights_snippet: Tests showed toxic protein which clogs brain started growing at age 20 .
  
highlights_snippet: This explains why Alzheimer's can advance so quickly, said experts .