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Brain scans reveal a possible cause of long COVID fatigue and brain fog

https://www.sciencedaily.com/releases/2026/09/260920222412.htm

Published: September 21, 2026 23:48

Researchers have found evidence that long COVID may damage dopamine releasing neurons in the brain, potentially explaining persistent fatigue, low motivation, slowed movement, and memory difficulties. The discovery could lead to new treatments that target…

Stem cells reverse stroke damage and restore movement in mice

https://www.sciencedaily.com/releases/2026/09/260921081116.htm

Published: September 21, 2026 21:49

Stem cell transplants helped regenerate stroke-damaged brain tissue in mice, producing new neurons and restoring lost motor function. The treatment also improved blood vessels, inflammation, and the blood-brain barrier, raising hopes that a similar…

Scientists create a needle-thin brain implant that can do three jobs at once

https://www.sciencedaily.com/releases/2026/09/260920222416.htm

Published: September 21, 2026 08:25

A new needle-thin brain implant can record neural activity, deliver drugs, and stimulate multiple brain regions using a single flexible fiber. Successful tests in mice suggest it could give scientists a more precise, less invasive way to study the brain…

Stanford scientists discover the human brain may actually be two separate organs

https://www.sciencedaily.com/releases/2026/09/260920222352.htm

Published: September 21, 2026 06:12

Scientists have found that the human brain develops from two distinct cellular systems, suggesting that evolution fused together two ancient nervous systems with very different jobs. The discovery also allowed researchers to grow human hindbrain neurons in…

Scientists find that “perfect” systems may be surprisingly fragile

https://www.sciencedaily.com/releases/2026/09/260919031022.htm

Published: September 19, 2026 07:26

Complex systems may work better when their parts are not perfectly alike. Northwestern physicists found that carefully balanced variation, or “disorder,” can make networks such as power grids, ecosystems, neurons, and materials more stable. Even random…

These blood thinners may have an unexpected benefit for Alzheimer’s patients

https://www.sciencedaily.com/releases/2026/09/260917003732.htm

Published: September 18, 2026 05:48

Newer blood thinners may do more than prevent strokes in people with Alzheimer’s disease and atrial fibrillation. Researchers found that patients taking NOACs experienced a slower decline in cognitive function than those using warfarin or no blood…

Scientists restore a brain protein and reverse signs of aging in mice

https://www.sciencedaily.com/releases/2026/09/260918000437.htm

Published: September 18, 2026 00:25

Scientists found that declining levels of the brain protein Menin may help drive aging, with lower levels in mice linked to inflammation, cognitive decline, weaker bones, and thinner skin. Restoring Menin reversed several age-related changes, while the…

Textbooks may have misdrawn this basic brain structure for 100 years

https://www.sciencedaily.com/releases/2026/09/260915232138.htm

Published: September 17, 2026 06:54

Scientists discovered that brain-cell axons may not be smooth tubes as textbooks have shown for more than a century, but instead naturally resemble strings of tiny pearls. Those pearl-like structures can change with neural activity and may help control how…

Hidden “immune organ” in the skull may help fight brain cancer

https://www.sciencedaily.com/releases/2026/09/260915232134.htm

Published: September 16, 2026 22:43

Scientists discovered a hidden “immune organ” inside the skull that acts as a rapid first responder against brain cancer in mice. Strengthening this local immune defense improved tumor rejection and survival, raising the possibility of new treatments that…

Scientists recreated what mice saw from brain activity alone

https://www.sciencedaily.com/releases/2026/09/260914102449.htm

Published: September 16, 2026 08:33

Scientists reconstructed videos from the brain activity of mice, producing 10-second clips based only on signals from neurons in the visual cortex. The breakthrough could help reveal how the brain reshapes what we see before it becomes our perception of…

Smelling chocolate helped men complete more reps without feeling more tired

https://www.sciencedaily.com/releases/2026/09/260914102445.htm

Published: September 15, 2026 11:03

Simply smelling chocolate helped men complete more leg extension repetitions without making the workout feel harder, with dark chocolate producing the strongest effect. The researchers think familiar food aromas may influence appetite and motivation by…

Scientists discover a major brain shift between ages 50 and 75

https://www.sciencedaily.com/releases/2026/09/260914102441.htm

Published: September 15, 2026 10:28

Scientists have uncovered sweeping changes in how the human brain controls and organizes its genome beginning in midlife, offering new clues to why aging sharply increases the risk of Alzheimer’s and other neurodegenerative diseases. One of the biggest…

Hidden brain wiring may help keep the mind sharp as gray matter shrinks

https://www.sciencedaily.com/releases/2026/09/260913081921.htm

Published: September 14, 2026 10:23

Scientists have discovered that the brain’s short-range wiring may help protect cognition even as gray matter shrinks with age. Healthier connections just beneath the brain’s surface were linked to better language skills and appeared to weaken the impact…

Scientists find a new layer of Alzheimer’s hidden in the genome

https://www.sciencedaily.com/releases/2026/09/260912220051.htm

Published: September 13, 2026 09:56

Scientists found that the 3D organization of DNA is disrupted in several types of brain cells affected by Alzheimer’s disease, altering how important genes are switched on and off. The discovery reveals a previously underexplored layer of the disease that…