Evolution isn’t random. Scientists find the same genes used for 120 million years

Evolution seems to follow a script more often than expected. Researchers found that distantly related butterflies and moths have reused the same pair of genes for over 120 million years to produce strikingly similar warning colors. Rather than altering the genes themselves, evolution modifies how they’re switched on and off. This discovery hints that life may evolve in more predictable ways than previously believed.

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Alzheimer’s drugs may not work and could raise brain risks

Drugs designed to clear amyloid beta from the brain—once seen as a promising path to slowing Alzheimer’s—may not actually help patients in any meaningful way, according to a major review of over 20,000 participants. Even more concerning, they may increase the risk of brain swelling and bleeding, sometimes without obvious symptoms.

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Scientists found the brain doesn’t start blank, it starts full

The brain’s memory center may begin life more like a crowded web than an empty canvas. Researchers discovered that early neural networks in the hippocampus are dense and seemingly random, then become more organized by shedding connections over time. This pruning process creates a faster, more efficient system for linking experiences and forming memories. It challenges the idea that the brain starts from scratch.

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Scientists discover a hidden brain “cleaning” effect triggered by movement

Scientists have uncovered a surprising link between simple body movement and brain health: every time you tighten your abdominal muscles—even slightly—your brain may gently sway inside your skull. This subtle motion, triggered by pressure changes in connected blood vessels, appears to help circulate cerebrospinal fluid around the brain, potentially flushing out harmful waste.

from Latest Science News -- ScienceDaily https://ift.tt/9I53wX7

Scientists discover a hidden brain “cleaning” effect triggered by movement

Scientists have uncovered a surprising link between simple body movement and brain health: every time you tighten your abdominal muscles—even slightly—your brain may gently sway inside your skull. This subtle motion, triggered by pressure changes in connected blood vessels, appears to help circulate cerebrospinal fluid around the brain, potentially flushing out harmful waste.

from Top Health News -- ScienceDaily https://ift.tt/9I53wX7

Your gut takes a “double hit” from stress and late-night eating

Chronic stress is already tough on your gut—but new research suggests late-night eating could make things even worse. Scientists analyzing thousands of people found that those under high stress who also ate a large portion of their calories after 9 p.m. were far more likely to suffer from constipation and diarrhea. The combination appears to hit the gut twice, not only disrupting digestion but also reducing the diversity of beneficial gut bacteria.

from Top Health News -- ScienceDaily https://ift.tt/XM7rC0w

Bronze Age mines discovered in Spain may explain Scandinavian metal mystery

Archaeologists have uncovered six previously unknown Bronze Age mines in southwestern Spain, offering a striking new clue about where the metal in ancient Scandinavian artifacts may have come from. Found near Cabeza del Buey, the sites include everything from small extraction zones to larger mining operations—one even packed with around 80 stone axes used to crush ore. These mines contain copper, lead, and silver, key materials that powered trade networks thousands of years ago.

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