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A proposed definition of the disease emphasizes signs of neurodegeneration and the presence of β-amyloid and tau, rather than cognitive symptoms.

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Findings from a randomized, controlled trial finds that reducing food intake decreases metabolism and reduces oxidative damage to tissues and cells.

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image: Another Bird Telomere Study, Different Results

Another Bird Telomere Study, Different Results

By Anna Azvolinsky | March 21, 2018

Two studies examining the effects of parents’ ages on their offsprings’ telomere lengths come to opposite conclusions.  

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The findings suggest that faster synthesis, rather than decreased clearance, causes the protein to build up in neurons.

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The findings contradict what has been observed in humans.  

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image: Image of the Day: Aging Brain Cells

Image of the Day: Aging Brain Cells

By The Scientist Staff | March 13, 2018

Scientists identified a gene involved in the age-related deterioration of mouse neural stem cells.

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image: Could Rapamycin Help Humans Live Longer?

Could Rapamycin Help Humans Live Longer?

By Anne N. Connor | March 1, 2018

From extending lifespan to bolstering the immune system, the drug’s effects are only just beginning to be understood.

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image: Rapping About Rapamycin

Rapping About Rapamycin

By The Scientist Staff | March 1, 2018

Relive the Lasker Award speech from University of Basel biologist Michael Hall.

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Researchers find that while bats in the Myotis genus don’t produce telomerase, the enzyme that lengthens telomeres, they possess 21 telomere maintenance–related genes.

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image: Can Young Stem Cells Make Older People Stronger?

Can Young Stem Cells Make Older People Stronger?

By Shawna Williams | December 11, 2017

Small trials using younger donors and elderly recipients hint that mesenchymal stem cell transfers might reduce frailty. 

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