Health & Fitness

Adequate blood flow supplies the brain with oxygen and nutrients, but the oxygenation tends to fluctuate in a distinct, consistent manner. The root of this varied activity, though, is poorly understood. Now, researchers have identified one cause of the fluctuations: inherent randomness in the flow rate of red blood cells through tiny blood vessels called capillaries.

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Scientists have opened the door to improved treatment of brain dysfunction which causes psychosis.

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Combined perceptions of the risk and availability of cannabis influence the risk of cannabis use more than perceived risk and perceived availability alone, according to a new study. Researchers observed that those who perceived cannabis as low-risk and available were more likely to report using the drug in the past year and almost daily compared to those individuals who perceived cannabis as high-risk and unavailable. This is the first study to consider the joint effects of perceived risk and perceived availability.

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A small regulatory RNA found in many problematic bacteria, including Escherichia coli, appears to be responsible for managing the response of these bacteria to environmental stresses. Researchers see a promising avenue for more effective treatment of antibiotic-resistant bacteria.

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A higher intake of ultra-processed food is associated with higher risk of inflammatory bowel disease (IBD), finds a new study.

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Statins are associated with a small increased risk of side effects in patients without a history of heart disease, but these effects are mild compared with the potential benefits of treatment in preventing major cardiovascular events, say researchers.

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Keeping your brain active in old age has always been a smart idea, but a new study suggests that reading, writing letters and playing card games or puzzles in later life may delay the onset of Alzheimer's dementia by up to five years.

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Having no children who completed college is negatively associated with parents' self-rated health and positively associated with depressive symptoms. Additionally, among parents with the highest propensity for having no children who complete college, the consequences on depressive symptoms are greatest.

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Researchers have discovered that the cell adhesion protein IgSF11 determines the layer-specific synaptic connectivity of a distinct class of cortical interneurons.

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A preclinical study offers hope for treatment of uveal melanoma, a rare and deadly cancer of the eye. A small molecule inhibitor has been identified that dampens the potent drivers of this tumor. In mouse models, the inhibitor strongly limited primary disease in the eye and metastatic tumor dissemination to the liver, and animals survived longer, without overt side effects.

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People with diabetes and depression who take antidepressants may have a lower risk of death and of serious diabetes complications, according to a new study.

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Researchers have shown in a brain organoid study that exposure to a common pesticide synergizes with a frequent autism-linked gene mutation.

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Researchers have discovered that a molecule found within many of the body's cells kills germs by dissolving their protective membranes.

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Western University bioengineer Kibret Mequanint and his international collaborators have found a novel use for snake venom: a body tissue 'super glue' that can stop life-threatening bleeding in seconds.

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Using an artificial intelligence approach capable of decoding brain activity during sleep, scientists were able to glimpse what we think about when we are asleep. By combining fMRI and EEG, they provide unprecedented evidence that the work of sorting out the thousands of pieces of information processed during the day takes place during deep sleep. Indeed, the brain can evaluate all of these memories in order to retain only the most useful ones.

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To date, there are no effective antidotes against most virus infections. Scientists have now developed a new approach: they engulf and neutralize viruses with nano-capsules tailored from genetic material using the DNA origami method. The strategy has already been tested against hepatitis and adeno-associated viruses in cell cultures. It may also prove successful against corona viruses.

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A new study finds resilience is a dynamic process, rather than a fixed trait - and suggests this may have significant ramifications for the business world.

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If you're regularly out in the fresh air, you're doing something good for both your brain and your well-being.

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If you didn't have a brain, could you still navigate your surroundings? Thanks to new research on slime molds, the answer may be 'yes.' Scientists discovered that the brainless Physarum polycephalum uses its body to sense mechanical cues in its environment, and decides where to grow based on that information. This finding provides a model for understanding different types of cognition, including our own.

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Pneumonia is the leading cause of death in children worldwide. A new study identifies an unusual pattern of deadly bacteria with resistance to all standard antibiotic therapy in children with pneumonia in Bangladesh. The findings signal an emerging pandemic of fatal antibiotic resistance.

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A previously unknown kind of human brain cell appears to help people center themselves in their personal maps of the world, according to a new study from neuroscientists. This discovery shed light on the cellular mechanisms underlying navigation and memory in humans, as well as what parts of the brain might get disrupted during the kinds of memory impairments common in neurodegenerative diseases such as Alzheimer's.

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Antibiotic exposure early in life could alter human brain development in areas responsible for cognitive and emotional functions, according to researchers.

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Researchers have found that terpenes mimic cannabinoids and produce similar pain-relieving effects, which are amplified when the two are used together.

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