At first it was little things -- conversations forgotten, details neglected -- that warned of the devastation to follow for John Frei.
A project manager who built homes and then banks for a living, he was still in his early 50s, and didn't notice the changes.
But his colleagues did. So did his three children and his wife, Joanne. "John became very quiet and withdrawn," Joanne said. "Not his normal, happy self."
For a year, his doctors offered lots of wrong guesses until a three-day visit to the Mayo Clinic last October confirmed the diagnosis.
"It may sound strange," Frei said one afternoon last week, "but it was a huge relief to find out I've got Alzheimer's."
Now 56, Frei is part of an unusual but growing group: roughly 200,000 Americans under age 65 with young-onset Alzheimer's disease. They represent about 4 percent of the 5.4 million people diagnosed with the progressive brain disease, for which there is no known cure.
"It's young for a diagnosis, but perhaps not so rare for people who actually have Alzheimer's and may not know it," said Dr. Ronald Petersen, director of the Mayo Alzheimer's Disease Research Center, who has specialized in detecting early signs of memory loss. "The signs can be there for years," Petersen said, "but often patients -- even doctors -- hope and wish that it's something else."
The number of Minnesotans with Alzheimer's is expected to rise from about 94,000 today to 198,000 in the next 30 years as baby boomers age -- a number that could go higher now that public health officials, nationally and locally, are pushing for early diagnosis.