00:00Scientists have announced what may be the biggest breakthrough in Alzheimer's research
00:04in decades. A newly discovered genetic marker could predict the disease up to 30 years before
00:09symptoms appear. The discovery comes from a major collaboration between neurologists and geneticists.
00:16It identifies a previously unknown gene variant linked to Alzheimer's risk. This gene appears to
00:22control how quickly amyloid plaques build up in the brain. That buildup is one of the main
00:27biological triggers of Alzheimer's disease. Today, nearly 7 million Americans are living with
00:33Alzheimer's, and that number could nearly double by 2050 without a major breakthrough. What makes
00:39this discovery so important is how early it can detect risk. The genetic marker can be identified
00:45through a simple blood test. That opens the door to early intervention, years or even decades before
00:52symptoms begin. Doctors say this could include lifestyle changes, medications, and experimental
00:58treatments. Researchers believe early action could delay, or possibly prevent, the disease.
01:04However, experts caution that this is not yet a cure. The next step is large-scale clinical trials to
01:11test early treatment strategies. But for millions of families, this discovery could change how Alzheimer's
01:17disease is detected, treated, and possibly avoided in the future.
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