Sometimes the end of an intestinal infection is just the beginning of more misery. Of those who contract traveler's diarrhea, for example, an unlucky few go on to develop irritable bowel syndrome (IBS), a chronic inflammation ...
Jan 10, 2020
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197
Adult stem cells provide the body with a reservoir from which damaged or used up tissues can be replenished. In organs like the intestines and skin, which need constant rejuvenating, these stem cells are dividing frequently. ...
Mar 3, 2016
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114
There's no doubt that you can lose fat by eating less or moving more—yet after decades of research, the biology underlying this equation remains mysterious. What really ignites the breakdown of stored fat molecules are ...
Jul 22, 2020
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140
Given the amount of wear and tear it's subjected to on a daily basis, the skin has a phenomenal ability to replenish itself. Spread throughout it are small reservoirs of stem cells, nested within supportive microenvironments ...
Nov 2, 2019
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314
Billions of years ago, as primitive lifeforms were becoming more complex, a selfish genetic component became a sort of genome colonizer. Using a copy-and-paste mechanism, this pernicious bit of code replicated and inserted ...
Dec 26, 2023
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187
Forgetfulness, it turns out, is all in the head. Scientists have shown that fading memory and clouding judgment, the type that comes with advancing age, show up as lost and altered connections between neurons in the brain. ...
Dec 22, 2014
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What drives tumor growth? Is it a few rogue cells imposing their will upon healthy tissue, or diseased tissue bringing out the worst in otherwise peaceable cells? Or is it a back-and-forth, a dialogue between the two? According ...
Nov 30, 2022
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648
Few cancer treatments are generating more excitement these days than immunotherapy—drugs based on the principle that the immune system can be harnessed to detect and kill cancer cells, much in the same way that it goes ...
Jan 12, 2018
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595
It is a hallmark of Alzheimer's disease: Toxic protein fragments known as amyloid-β clumped together between neurons in a person's brain. Neurons themselves make amyloid-β, and for reasons that aren't fully understood, ...
Aug 18, 2015
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167
Great strides have been made in recent years to develop treatment options for HIV, and the disease can now be controlled with anti-retroviral drugs. But a cure remains elusive and current medications have limitations: they ...
Jul 26, 2016
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