Alzheimer’s Spreads Like a Virus in the Brain, Studies Find


Alzheimer’s disease seems to spread like an infection from brain cell to brain cell, two new studies find. But instead of viruses or bacteria, what is being spread is a distorted protein known as tau.

The surprising finding answers a longstanding question and has immediate implications for developing treatments, researchers said. And they suspect that other degenerative brain diseases like Parkinson’s may spread in a similar way.

Alzheimer’s researchers have long known that dying, tau-filled cells first emerge in a small area of the brain where memories are made and stored. The disease then slowly moves outward to larger areas that involve remembering and reasoning.

But for more than a quarter-century, researchers have been unable to decide between two explanations. One is that the spread may mean that the disease is transmitted from neuron to neuron, perhaps along the paths that nerve cells use to communicate with one another. Or it could simply mean that some brain areas are more resilient than others and resist the disease longer.

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  • Pat Roberts

    This Tau that spreads, is it passed frm person to person. Or something eaten? Or inhaled into lungs? How does it get there? Or from all these new preventative injections?
    Perhaps frm chemicals we breathe and inhale?
    There so many chemicals on our food, water, makeup, what we cook with, our meds, toothpaste. It’s no wonder we are all I’ll! The Gov tells us these chemicals are only minute amounts. But when you add up all food, water,
    Toothpaste, Air we breathe, etc, over the many years, these chemicals build up in our bodies.
    I think this is where examiners should start.

  • Jim

    On October 30, 2009 President Barack Obama reauthorized the Ryan White HIV/AIDS Bill which expanded care and treatment through federal funding to nearly half a million. He also announced that the Department of Health and Human Services crafted regulation that would end the HIV Travel and Immigration Ban effective in January 2010; on January 4, 2010, the United States Department of Health and Human Services, Centers for Disease Control and Prevention removed HIV status as a factor to be considered in the granting of travel visas. Our government allows a dangerous disease to come into America.
    UNAIDS estimates that there are a total of about 1,200,000 people in the U.S. living with HIV as of 2009, and that 310,000 of these are women (female <15years of age).
    However, According to the Alzheimer’s Foundation of America, It is estimated that as many as 5.1 million Americans may have Alzheimer's disease. The incidence of the disease is rising in line with the aging population.
    Although Alzheimer's disease is not a normal part of aging, the risk of developing the illness rises with advanced age. Current research from the National Institute on Aging indicates that the prevalence of Alzheimer's disease doubles every five years beyond age 65.
    As our population ages, the disease impacts a greater percentage of Americans. The numbers of people age 65 and older will more than double between 2010 and 2050 to 88.5 million or 20 percent of the population; likewise, those 85 and older will rise three-fold, to 19 million, according to the U.S. Census Bureau.
    The Government considers the HIV/AIDS program to be politically popular, especially with the Liberal leaning society, to provide funding to the unfortunate victims that practice unsafe sex. The seniors that have Alzheimer’s apparently have no political value to our government. They are considered too old and poor to be considered a force to be reckoned with.

  • Lee

    AMAZING INFORMATION! Share with friends!
    I have started eating the coconut oil with oatmeal.
    Please watch this, it is very informative about Alzheimers!

  • nug

    Drink beer! Alcohol kills only the already sick brain cells!

  • Spense

    If government gave the millions and millions of dollars for research for a cure of degenerative brain diseases, like Parkinson’s that they give to HIV/AIDS there would probably already be a cure! But no, they place those whose often illegal behavior caused their exposure to HIV/AIDS, those like sodomites, crack heads and whores. There life is placed above those with degenerative brain diseases like Parkinson’s and Alzheimer’s disease

    • Lee

      I certainly understand your emotions on this topic.
      Unfortunately the sad truth about HIV/Aids is a lot of INNOCENT people get infected. For example, a husband gets infected with a prostitute, comes home and without knowing he is infected gives the virus to his wife. Then perhaps the wife divorces the husband for straying and without knowing she is infected, dates other men and possibly spreads aids to them.
      One can have HIV and test negative for it for up to 7 years! So for 7 years a person can think they are "clean" when they are not. Even if the woman in the example does not have sex until she re-marries if the marries before her HIV turns into aids then she can infect her new husband. Worse yet, there is a mutated strain of aids in CA that is transmitted by saliva! All an infected person has to do is kiss another person to infect them.

      • Nellie McConnell

        I have worked with Gay men in a Mission and I know of one man who was tested for HIV 30 years ago and this never showed up on his DNA until about 5 years ago. He was in a government program all these years. He started having problems and his DNA showed an increase of the HIV virus. No insurance and the state now pays 1800 a month for his drugs. This is scary! I wonder just how many young people are affected and don't know..

      • Spense

        The FACT is most who contract HIV/AIDS do so because they ignored the warnings of avoiding the high risk behaviors. The fault is theirs…. let them lay in that bed!

        "Worse yet, there is a mutated strain of aids in CA that is transmitted by saliva! All an infected person has to do is kiss another person to infect them. "

        Well then we need to isolate all those with HIV/AIDS in one place…… stop putting everyone at risk.