https://www.sciencedaily.com/news/health_medicine/alzheimer's/ Learn about Alzheimer's Disease symptoms such as memory loss and senile dementia. Find out about the treatments and causes, as well as the stages of Alzheimer's Disease and dementia. en-us Fri, 17 Apr 2026 08:49:34 EDT Fri, 17 Apr 2026 08:49:34 EDT 60 https://www.sciencedaily.com/images/scidaily-logo-rss.png https://www.sciencedaily.com/news/health_medicine/alzheimer's/ For more science news, visit ScienceDaily. https://www.sciencedaily.com/releases/2026/04/260409101111.htm Alzheimer’s isn’t just one problem—it’s a tangled mix of biology, aging, and overall health. That’s why drugs targeting a single factor have fallen short, even as new treatments show modest benefits. Scientists are now pushing toward multi-pronged strategies, from gene editing to brain-cell rejuvenation and gut health interventions. The goal: stop treating Alzheimer’s as one disease and start tackling it as a complex system. Fri, 10 Apr 2026 10:12:15 EDT https://www.sciencedaily.com/releases/2026/04/260409101111.htm https://www.sciencedaily.com/releases/2026/04/260408225933.htm Scientists have uncovered a surprising new player in Alzheimer’s disease: a protein called CSE that helps produce tiny amounts of hydrogen sulfide gas in the brain. In experiments with genetically engineered mice, removing this protein led to memory loss, brain damage, and other hallmarks of Alzheimer’s, including weakened blood-brain barriers and reduced formation of new neurons. The findings suggest that this “rotten egg” gas, when carefully regulated, may actually protect brain cells and support memory. Wed, 08 Apr 2026 22:59:33 EDT https://www.sciencedaily.com/releases/2026/04/260408225933.htm https://www.sciencedaily.com/releases/2026/04/260406192922.htm Scientists at Oregon State University have captured something researchers have long struggled to see: the real-time chemical interactions that help drive Alzheimer’s disease. By watching how metal ions—especially copper—trigger harmful protein clumping in the brain, the team uncovered a clearer picture of how the disease develops at a molecular level. Tue, 07 Apr 2026 07:37:31 EDT https://www.sciencedaily.com/releases/2026/04/260406192922.htm https://www.sciencedaily.com/releases/2026/03/260328024519.htm Scientists have uncovered how your body actually tells your brain to stop eating when you’re sick. In a new study, researchers found that specialized cells in the gut detect parasites and send signals that ultimately trigger the brain to suppress appetite. This process builds over time, explaining why you may feel fine at first but then suddenly lose interest in food as an infection takes hold. Sat, 28 Mar 2026 04:35:02 EDT https://www.sciencedaily.com/releases/2026/03/260328024519.htm https://www.sciencedaily.com/releases/2026/03/260323005526.htm Scientists have uncovered a hidden “death switch” in the brain that may be driving Alzheimer’s disease—and even found a way to turn it off in mice. The culprit is a toxic pairing of two proteins that, when combined, triggers the destruction of brain cells and fuels memory loss. By using a new compound to break apart this deadly duo, researchers were able to slow disease progression, protect brain cells, and even reduce hallmark amyloid buildup. Mon, 23 Mar 2026 05:34:10 EDT https://www.sciencedaily.com/releases/2026/03/260323005526.htm https://www.sciencedaily.com/releases/2026/03/260317064457.htm A key Alzheimer’s drug has finally revealed its secret. Researchers discovered that lecanemab works by activating the brain’s immune cells—but only through a specific part of the antibody called the Fc fragment. This piece acts like a trigger, prompting microglia to clear harmful amyloid plaques. The finding could reshape how future Alzheimer’s therapies are designed. Tue, 17 Mar 2026 07:44:52 EDT https://www.sciencedaily.com/releases/2026/03/260317064457.htm https://www.sciencedaily.com/releases/2026/03/260312020104.htm A new study suggests Alzheimer’s disease may be detectable through subtle shape changes in proteins found in the blood. Researchers discovered that structural differences in three blood proteins closely track the progression of the disease. By analyzing these changes in more than 500 people, the team was able to distinguish healthy individuals from those with mild cognitive impairment or Alzheimer’s with impressive accuracy. The approach could help move diagnosis and treatment to earlier stages. Thu, 12 Mar 2026 07:00:56 EDT https://www.sciencedaily.com/releases/2026/03/260312020104.htm https://www.sciencedaily.com/releases/2026/03/260311004720.htm Scientists have developed a promising new approach to treating Alzheimer’s disease by turning ordinary brain cells into powerful plaque-clearing machines. Instead of requiring frequent antibody infusions like current therapies, the experimental treatment uses genetically engineered astrocytes — abundant support cells in the brain — that are equipped with a CAR “homing device” similar to those used in cancer immunotherapy. Wed, 11 Mar 2026 17:01:42 EDT https://www.sciencedaily.com/releases/2026/03/260311004720.htm https://www.sciencedaily.com/releases/2026/03/260311004711.htm THC doesn’t just blur memories—it can create new ones that never happened. In a controlled experiment, cannabis users were much more likely to recall words that were never shown and struggled with tasks like remembering to do something later. Researchers found that THC disrupted many different memory systems at once. Surprisingly, moderate doses caused memory problems similar to higher doses. Wed, 11 Mar 2026 00:47:11 EDT https://www.sciencedaily.com/releases/2026/03/260311004711.htm https://www.sciencedaily.com/releases/2026/03/260302030648.htm Researchers are developing a two-part therapy for type 1 diabetes: lab-made insulin-producing cells paired with custom-engineered immune cells that protect them. The goal is to stop the immune system from destroying transplanted cells — without using immunosuppressive drugs. Backed by $1 million in funding, the team hopes to create a ready-to-use treatment that could work even for people who have had diabetes for years. The approach could transform how the disease is treated. Mon, 02 Mar 2026 11:49:16 EST https://www.sciencedaily.com/releases/2026/03/260302030648.htm https://www.sciencedaily.com/releases/2026/02/260227061821.htm Researchers at Nagoya University have created a more efficient iron-based photocatalyst that could reduce the need for rare and expensive metals in advanced chemistry. Unlike earlier designs, the new catalyst uses far fewer costly chiral ligands while still precisely controlling the three dimensional structure of molecules. Fri, 27 Feb 2026 11:08:10 EST https://www.sciencedaily.com/releases/2026/02/260227061821.htm https://www.sciencedaily.com/releases/2026/02/260224023159.htm Subtle changes in brain blood flow and oxygen use are closely linked to hallmark signs of Alzheimer’s, including amyloid plaques and memory-related brain shrinkage. Simple, noninvasive scans may one day help spot risk earlier—by looking at the brain’s vascular health, not just its plaques. Tue, 24 Feb 2026 10:21:58 EST https://www.sciencedaily.com/releases/2026/02/260224023159.htm https://www.sciencedaily.com/releases/2026/02/260222085203.htm Scientists have created a blood test that can estimate when Alzheimer’s symptoms are likely to begin. By measuring a protein called p-tau217, the model predicts symptom onset within roughly three to four years. The protein mirrors the silent buildup of amyloid and tau in the brain long before memory loss appears. This advance could speed up preventive drug trials and eventually guide personalized care. Mon, 23 Feb 2026 06:46:07 EST https://www.sciencedaily.com/releases/2026/02/260222085203.htm https://www.sciencedaily.com/releases/2026/02/260221000332.htm Researchers have mapped the genetic risk of hemochromatosis across the UK and Ireland for the first time, uncovering striking hotspots in north-west Ireland and the Outer Hebrides. In some regions, around one in 60 people carry the high-risk gene variant linked to iron overload. The condition can take decades to surface but may lead to liver cancer and arthritis if untreated. Sat, 21 Feb 2026 09:38:45 EST https://www.sciencedaily.com/releases/2026/02/260221000332.htm https://www.sciencedaily.com/releases/2026/02/260215225555.htm Researchers have identified two brain receptors that help the brain clear away amyloid beta, a hallmark of Alzheimer’s disease. By stimulating these receptors in mice, scientists increased levels of a natural amyloid-breaking enzyme, reduced buildup in the brain, and improved memory-related behavior. Because these receptors are common drug targets, the findings could open the door to affordable pill-based treatments with fewer side effects. Tue, 17 Feb 2026 05:30:08 EST https://www.sciencedaily.com/releases/2026/02/260215225555.htm https://www.sciencedaily.com/releases/2026/02/260211073023.htm A simple brain-training program that sharpens how quickly older adults process visual information may have a surprisingly powerful long-term payoff. In a major 20-year study of adults 65 and older, those who completed five to six weeks of adaptive “speed of processing” training — along with a few booster sessions — were significantly less likely to develop dementia, including Alzheimer’s disease, even two decades later. Participants who received the boosted speed training had a 25% lower dementia risk compared to those who received no training, making it the only intervention in the trial to show such a lasting protective effect. Wed, 11 Feb 2026 22:15:24 EST https://www.sciencedaily.com/releases/2026/02/260211073023.htm https://www.sciencedaily.com/releases/2026/02/260209064314.htm A long-term study of older adults with moderate hearing loss found that hearing aids did not lead to better performance on memory or thinking tests, but the story did not end there. Over seven years, people who were prescribed hearing aids were significantly less likely to develop dementia than those who were not. Mon, 09 Feb 2026 06:43:14 EST https://www.sciencedaily.com/releases/2026/02/260209064314.htm https://www.sciencedaily.com/releases/2026/02/260206012213.htm Scientists have uncovered promising clues that compounds found in Aloe vera could play a role in fighting Alzheimer’s disease. Using advanced computer modeling, researchers discovered that beta-sitosterol—a natural plant compound—strongly interacts with two key enzymes involved in memory loss and cognitive decline. The compound showed stability, strong binding, and favorable safety indicators, making it a standout candidate for future drug development. Sun, 08 Feb 2026 07:57:41 EST https://www.sciencedaily.com/releases/2026/02/260206012213.htm https://www.sciencedaily.com/releases/2026/02/260203030540.htm A massive Swedish study tracking nearly 28,000 people for 25 years found an unexpected link between full-fat dairy and brain health. Among adults without a genetic risk for Alzheimer’s, eating more full-fat cheese was associated with a noticeably lower risk of developing the disease, while higher cream intake was tied to reduced dementia risk overall. The findings challenge decades of low-fat dietary advice but come with important caveats. Wed, 04 Feb 2026 09:44:17 EST https://www.sciencedaily.com/releases/2026/02/260203030540.htm https://www.sciencedaily.com/releases/2026/02/260201223732.htm Researchers studying nearly 2 million older adults found that cerebral amyloid angiopathy sharply raises the risk of developing dementia. Within five years, people with the condition were far more likely to be diagnosed than those without it. The increased risk was present even without a history of stroke. Experts say this makes early screening for memory and thinking changes especially important. Sun, 01 Feb 2026 23:08:47 EST https://www.sciencedaily.com/releases/2026/02/260201223732.htm https://www.sciencedaily.com/releases/2026/02/260201062459.htm When the brain rests, it usually replays recent experiences to strengthen memory. Scientists found that in Alzheimer’s-like mice, this replay still occurs — but the signals are jumbled and poorly coordinated. As a result, memory-supporting brain cells lose their stability, and the animals struggle to remember where they’ve been. Sun, 01 Feb 2026 10:41:29 EST https://www.sciencedaily.com/releases/2026/02/260201062459.htm https://www.sciencedaily.com/releases/2026/01/260126231847.htm A new genetic study suggests that obesity and high blood pressure may play a direct role in causing dementia, not just increasing the risk. By analyzing data from large populations in Denmark and the U.K., researchers found strong evidence that higher body weight can damage brain health over time, especially when it leads to elevated blood pressure. Much of the dementia risk appeared to be tied to vascular damage in the brain, which affects blood flow and cognitive function. Mon, 26 Jan 2026 23:18:47 EST https://www.sciencedaily.com/releases/2026/01/260126231847.htm https://www.sciencedaily.com/releases/2026/01/260125083413.htm Alzheimer’s may destroy memory by flipping a single molecular switch that tells neurons to prune their own connections. Researchers found that both amyloid beta and inflammation converge on the same receptor, triggering synapse loss. Surprisingly, neurons aren’t passive victims—they actively respond to these signals. Targeting this receptor could offer a new way to protect memory beyond current amyloid-focused drugs. Mon, 26 Jan 2026 03:08:27 EST https://www.sciencedaily.com/releases/2026/01/260125083413.htm https://www.sciencedaily.com/releases/2026/01/260122073623.htm Alzheimer’s may be driven far more by genetics than previously thought, with one gene playing an outsized role. Researchers found that up to nine in ten cases could be linked to the APOE gene — even including a common version once considered neutral. The discovery reshapes how scientists think about risk and prevention. It also highlights a major opportunity for new treatments aimed at a single biological pathway. Fri, 23 Jan 2026 10:16:38 EST https://www.sciencedaily.com/releases/2026/01/260122073623.htm https://www.sciencedaily.com/releases/2026/01/260120000305.htm A new study suggests that micro-doses of THC could help counter many long-term side effects of HIV treatment without causing intoxication. In animal models, low-dose THC reduced inflammation, improved gut bacteria, boosted serotonin, and lowered harmful cholesterol and bile acids. Surprisingly, it also reduced circulating levels of antiretroviral drugs while maintaining viral suppression, potentially protecting the liver. Scientists say the results point to a promising new approach for managing chronic complications of HIV. Wed, 21 Jan 2026 01:36:19 EST https://www.sciencedaily.com/releases/2026/01/260120000305.htm https://www.sciencedaily.com/releases/2026/01/260118233547.htm Cannabis-based medicines have been widely promoted as a potential answer for people living with chronic nerve pain—but a major new review finds the evidence just isn’t there yet. After analyzing more than 20 clinical trials involving over 2,100 adults, researchers found no strong proof that cannabis products outperform placebos in relieving neuropathic pain. Even when small improvements were reported, especially with THC-CBD combinations, they weren’t large enough to make a real difference in daily life. Mon, 19 Jan 2026 00:11:47 EST https://www.sciencedaily.com/releases/2026/01/260118233547.htm https://www.sciencedaily.com/releases/2026/01/260116035348.htm Researchers have identified OTULIN, an immune-regulating enzyme, as a key trigger of tau buildup in the brain. When OTULIN was disabled, tau vanished from neurons and brain cells remained healthy. The findings challenge long-held assumptions about tau’s necessity and highlight a promising new path for fighting Alzheimer’s and brain aging. Scientists now believe OTULIN may act as a master switch for inflammation and age-related brain decline. Fri, 16 Jan 2026 03:53:48 EST https://www.sciencedaily.com/releases/2026/01/260116035348.htm https://www.sciencedaily.com/releases/2026/01/260114084107.htm A massive international brain study has revealed that memory decline with age isn’t driven by a single brain region or gene, but by widespread structural changes across the brain that build up over time. Analyzing thousands of MRI scans and memory tests from healthy adults, researchers found that memory loss accelerates as brain tissue shrinkage increases, especially later in life. While the hippocampus plays a key role, many other brain regions also contribute, forming a broad vulnerability rather than isolated damage. Wed, 14 Jan 2026 09:56:10 EST https://www.sciencedaily.com/releases/2026/01/260114084107.htm https://www.sciencedaily.com/releases/2026/01/260112001041.htm Researchers have discovered a brain activity pattern that can predict which people with mild cognitive impairment are likely to develop Alzheimer’s disease. Using a noninvasive brain scanning technique and a custom analysis tool, they detected subtle changes in electrical signals tied to memory processing years before diagnosis. The findings point to a new way of spotting Alzheimer’s early—by listening directly to how neurons behave. Mon, 12 Jan 2026 09:24:19 EST https://www.sciencedaily.com/releases/2026/01/260112001041.htm https://www.sciencedaily.com/releases/2026/01/260108231411.htm Although the gut renews itself constantly, its stem cells accumulate age-related molecular changes that quietly alter how genes are switched on and off. Scientists found that this “epigenetic drift” follows a clear pattern and appears in both aging intestines and most colon cancers. Some regions age faster than others, forming a patchwork of weakened tissue more prone to degeneration. Encouragingly, researchers showed this drift can be slowed—and partly reversed—by restoring iron levels or key cellular signals. Sat, 10 Jan 2026 08:17:12 EST https://www.sciencedaily.com/releases/2026/01/260108231411.htm https://www.sciencedaily.com/releases/2026/01/260108231409.htm New research shows that aging blood can accelerate Alzheimer’s-like changes in the brain, while younger blood may offer protection. In mouse experiments, older blood worsened memory performance and increased toxic protein buildup linked to the disease. The study also uncovered widespread changes in brain proteins tied to communication and signaling. The findings point to the blood as a powerful influencer of brain health—and a promising new therapeutic target. Sat, 10 Jan 2026 02:10:38 EST https://www.sciencedaily.com/releases/2026/01/260108231409.htm https://www.sciencedaily.com/releases/2026/01/260103155026.htm Your daily rhythm may matter more for brain health than previously thought. Older adults with weaker, more disrupted activity patterns were far more likely to develop dementia than those with steady routines. A later daily energy peak was also linked to higher risk. The study points to the body clock as a possible early warning sign for cognitive decline. Sat, 03 Jan 2026 19:52:00 EST https://www.sciencedaily.com/releases/2026/01/260103155026.htm https://www.sciencedaily.com/releases/2025/12/251228020016.htm Researchers discovered that clogged brain “drains” show up early in people at risk of Alzheimer’s disease. These blockages, easily seen on standard MRI scans, are tied to toxic protein buildup linked to memory loss and cognitive decline. In some cases, they may signal Alzheimer’s earlier than other commonly used brain markers. This could help physicians detect the disease earlier, before irreversible damage sets in. Sat, 03 Jan 2026 00:45:11 EST https://www.sciencedaily.com/releases/2025/12/251228020016.htm https://www.sciencedaily.com/releases/2025/12/251224015651.htm Cannabis products with higher THC levels may slightly reduce chronic pain, particularly nerve pain, according to a review of multiple clinical trials. The improvement was small and short-lived, while side effects were more common. Products with little or no THC, including CBD-only formulations, showed no clear benefit. Researchers say more long-term studies are needed. Tue, 30 Dec 2025 20:44:59 EST https://www.sciencedaily.com/releases/2025/12/251224015651.htm https://www.sciencedaily.com/releases/2025/12/251222080119.htm New research suggests Alzheimer’s may start far earlier than previously thought, driven by a hidden toxic protein in the brain. Scientists found that an experimental drug, NU-9, blocks this early damage in mice and reduces inflammation linked to disease progression. The treatment was given before symptoms appeared, targeting the disease at its earliest stage. Researchers say this approach could reshape how Alzheimer’s is prevented and treated. Mon, 22 Dec 2025 08:11:02 EST https://www.sciencedaily.com/releases/2025/12/251222080119.htm https://www.sciencedaily.com/releases/2025/12/251221091246.htm Eating full-fat cheese and cream may be associated with a lower risk of dementia, according to a large study that tracked people for more than 25 years. Those who consumed higher amounts of these foods developed dementia less often than those who ate little or none. Interestingly, low-fat dairy products did not show the same pattern. Researchers caution that the findings show an association, not cause and effect. Sun, 21 Dec 2025 23:52:31 EST https://www.sciencedaily.com/releases/2025/12/251221091246.htm https://www.sciencedaily.com/releases/2025/12/251215025315.htm Scientists have discovered that key compounds from cannabis—CBD and THC—show surprisingly strong effects against ovarian cancer cells. Used together, they slow cell growth, reduce colony formation, and may even block the cancer’s ability to spread. Even more promising, the treatment caused minimal harm to healthy cells and appears to work by restoring a disrupted signaling pathway that fuels tumor growth. Mon, 15 Dec 2025 03:22:06 EST https://www.sciencedaily.com/releases/2025/12/251215025315.htm https://www.sciencedaily.com/releases/2025/12/251210092019.htm Obesity accelerates the rise of Alzheimer’s-related blood biomarkers far more rapidly than previously recognized. Long-term imaging and plasma data show that obese individuals experience much faster increases in proteins linked to neurodegeneration and amyloid buildup. Surprisingly, blood tests detected these changes earlier than PET scans. The results point to obesity as a major, modifiable contributor to Alzheimer’s progression. Wed, 10 Dec 2025 12:23:51 EST https://www.sciencedaily.com/releases/2025/12/251210092019.htm https://www.sciencedaily.com/releases/2025/12/251208052804.htm Researchers discovered that a tiny structural feature of the enzyme GPX4 helps keep neurons safe. A rare mutation removes this protection, allowing harmful molecules to damage cell membranes and trigger early dementia. Mouse and cell studies showed changes resembling Alzheimer’s. Early tests to slow this damage give scientists new directions to explore. Tue, 09 Dec 2025 04:12:54 EST https://www.sciencedaily.com/releases/2025/12/251208052804.htm https://www.sciencedaily.com/releases/2025/12/251203004721.htm A unique vaccine rollout in Wales gave researchers an accidental natural experiment that revealed a striking reduction in dementia among seniors who received the shingles vaccine. The protective effect held steady across multiple analyses and was even stronger in women. Evidence also suggests benefits for people who already have dementia, hinting at a therapeutic effect. Wed, 03 Dec 2025 10:22:27 EST https://www.sciencedaily.com/releases/2025/12/251203004721.htm https://www.sciencedaily.com/releases/2025/11/251127010319.htm Scientists studying young adults with obesity discovered early indicators of brain stress that resemble patterns seen in cognitive impairment. The group showed higher inflammation, signs of liver strain and elevated neurofilament light chain, a marker of neuron injury. Low choline levels appeared closely tied to these changes. The results hint that early metabolic disruptions may quietly influence the brain long before symptoms emerge. Thu, 27 Nov 2025 02:45:12 EST https://www.sciencedaily.com/releases/2025/11/251127010319.htm https://www.sciencedaily.com/releases/2025/11/251126095023.htm Spermine, a small but powerful molecule in the body, helps neutralize harmful protein accumulations linked to Alzheimer’s and Parkinson’s. It encourages these misfolded proteins to gather into manageable clumps that cells can more efficiently dispose of through autophagy. Experiments in nematodes show that spermine also enhances longevity and cellular energy production. These insights open the door to targeted therapies powered by polyamines and advanced AI-driven molecular design. Thu, 27 Nov 2025 07:35:52 EST https://www.sciencedaily.com/releases/2025/11/251126095023.htm https://www.sciencedaily.com/releases/2025/11/251123085550.htm Researchers discovered that raising the protein Sox9 can help the brain’s astrocytes clear out toxic plaque buildup linked to Alzheimer’s. In mouse models that already showed memory problems, activating these cells improved cognitive performance. The treatment also reduced plaque levels over time. The work points toward a natural, cell-based way to slow Alzheimer’s decline. Sun, 23 Nov 2025 09:23:57 EST https://www.sciencedaily.com/releases/2025/11/251123085550.htm https://www.sciencedaily.com/releases/2025/11/251121090731.htm Researchers discovered that the common amino acid arginine can block harmful Aβ aggregation and reduce its toxic effects in Alzheimer’s disease models. In flies and mice, oral arginine lowered plaque levels, reduced inflammation, and improved behavior. Its strong safety record and low cost make it a promising repurposing candidate. The findings hint at a surprisingly simple path toward more accessible AD therapies. Fri, 21 Nov 2025 11:33:04 EST https://www.sciencedaily.com/releases/2025/11/251121090731.htm https://www.sciencedaily.com/releases/2025/11/251118220052.htm Scientists have developed a new molecule that breaks down beta-amyloid plaques by binding to excess copper in the brain. The treatment restored memory and reduced inflammation in rats, while also proving non-toxic and able to cross the blood–brain barrier. Because it’s far simpler and potentially cheaper than existing drugs, researchers are now pursuing partnerships to begin human trials. Wed, 19 Nov 2025 10:46:50 EST https://www.sciencedaily.com/releases/2025/11/251118220052.htm https://www.sciencedaily.com/releases/2025/11/251111005944.htm Japanese researchers found that lecanemab, an amyloid-clearing drug for Alzheimer’s, does not improve the brain’s waste clearance system in the short term. This implies that nerve damage and impaired clearance occur early and are difficult to reverse. Their findings underscore that tackling amyloid alone may not be enough to restore brain function, urging a broader approach to treatment. Tue, 11 Nov 2025 01:47:33 EST https://www.sciencedaily.com/releases/2025/11/251111005944.htm https://www.sciencedaily.com/releases/2025/11/251106003155.htm Weill Cornell researchers uncovered how free radicals from astrocyte mitochondria can fuel dementia. Using new compounds that target these radicals at their source, they slowed brain inflammation and neuronal damage in mice. The findings reveal a potential breakthrough for treating diseases like Alzheimer’s and frontotemporal dementia by focusing on the precise mechanisms driving degeneration. Thu, 06 Nov 2025 00:31:55 EST https://www.sciencedaily.com/releases/2025/11/251106003155.htm https://www.sciencedaily.com/releases/2025/11/251105050720.htm Virginia Tech researchers have shown that memory loss in aging may be reversible. Using CRISPR tools, they corrected molecular disruptions in the hippocampus and amygdala, restoring memory in older rats. Another experiment revived a silenced memory gene, IGF2, through targeted DNA methylation editing. These findings highlight that aging brains can regain function through precise molecular intervention. Wed, 05 Nov 2025 22:55:58 EST https://www.sciencedaily.com/releases/2025/11/251105050720.htm https://www.sciencedaily.com/releases/2025/11/251104013008.htm Walking a few thousand steps daily may help hold off Alzheimer’s for years, a Mass General Brigham study found. Even moderate physical activity slowed both cognitive decline and the buildup of harmful tau proteins in the brain. The researchers say these results show lifestyle changes can meaningfully delay Alzheimer’s symptoms, especially in early stages. Tue, 04 Nov 2025 09:16:57 EST https://www.sciencedaily.com/releases/2025/11/251104013008.htm https://www.sciencedaily.com/releases/2025/11/251102205012.htm Disrupted sleep patterns in Alzheimer’s disease may be more than a symptom—they could be a driving force. Researchers at Washington University found that the brain’s circadian rhythms are thrown off in key cell types, changing when hundreds of genes turn on and off. This disruption, triggered by amyloid buildup, scrambles normal gene timing in microglia and astrocytes—cells vital for brain maintenance and immune defense. Mon, 03 Nov 2025 01:25:26 EST https://www.sciencedaily.com/releases/2025/11/251102205012.htm https://www.sciencedaily.com/releases/2025/10/251029100154.htm Researchers used supramolecular nanoparticles to repair the brain’s vascular system and reverse Alzheimer’s in mice. Instead of carrying drugs, the nanoparticles themselves triggered natural clearance of amyloid-β proteins. This restored blood-brain barrier function and reversed memory loss. The results point to a revolutionary new path for treating neurodegenerative diseases. Wed, 29 Oct 2025 10:01:54 EDT https://www.sciencedaily.com/releases/2025/10/251029100154.htm https://www.sciencedaily.com/releases/2025/10/251023031618.htm Colorado researchers discovered that nearly half of tested cannabis flower products exaggerated their THC levels, while concentrates were mostly accurate. The team’s statewide audit revealed potency inconsistencies that could mislead consumers and affect safe dosing. Beyond THC, the study also found that cannabinoids like CBG and CBGA are underreported. The findings may help shape future regulations and improve consumer trust in the growing cannabis market. Thu, 23 Oct 2025 23:55:55 EDT https://www.sciencedaily.com/releases/2025/10/251023031618.htm https://www.sciencedaily.com/releases/2025/10/251022023113.htm Scientists have uncovered a toxic alliance between Aβ and fibrinogen that may explain how Alzheimer’s disease begins. The two proteins together create stubborn clots that damage blood vessels and spark inflammation in the brain. These effects appear even at very low concentrations and disrupt the blood-brain barrier, paving the way for neurodegeneration. The findings highlight a potential new therapeutic target for early intervention. Wed, 22 Oct 2025 09:19:26 EDT https://www.sciencedaily.com/releases/2025/10/251022023113.htm https://www.sciencedaily.com/releases/2025/10/251019120516.htm Researchers have created a new iron supplement that merges iron, probiotics, and prebiotics. This “three-in-one” formula restores iron levels while maintaining gut health and preventing inflammation. In mice studies, it normalized hemoglobin and gut bacteria without side effects. The innovation could reshape how anemia is treated. Mon, 20 Oct 2025 01:14:44 EDT https://www.sciencedaily.com/releases/2025/10/251019120516.htm https://www.sciencedaily.com/releases/2025/10/251018102118.htm SuperAgers defy normal aging by keeping sharp memories and healthy brains well into their 80s. Northwestern scientists discovered that these individuals either resist the buildup of harmful brain proteins or remain unaffected by them. Their brains stay structurally youthful, and their strong social lives may help protect cognition. The findings could inspire new ways to delay or prevent dementia. Sun, 19 Oct 2025 09:45:18 EDT https://www.sciencedaily.com/releases/2025/10/251018102118.htm https://www.sciencedaily.com/releases/2025/10/251014014312.htm Researchers have synthesized enhanced vitamin K analogues that outperform natural vitamin K in promoting neuron growth. The new compounds, which combine vitamin K with retinoic acid, activate the mGluR1 receptor to drive neurogenesis. They also efficiently cross the blood-brain barrier and show stability in vivo. This discovery could pave the way for regenerative treatments for Alzheimer’s and related diseases. Tue, 14 Oct 2025 11:08:36 EDT https://www.sciencedaily.com/releases/2025/10/251014014312.htm https://www.sciencedaily.com/releases/2025/10/251010091555.htm A surprising link between Alzheimer’s and cancer reveals that amyloid beta, a harmful protein in the brain, actually empowers the immune system. It strengthens T-cells’ energy production, helping them fight cancer more effectively. By restoring fumarate levels or transplanting healthy mitochondria, researchers may be able to rejuvenate aging immune cells. These findings could inspire a new generation of treatments that target both cancer and age-related decline. Fri, 10 Oct 2025 09:15:55 EDT https://www.sciencedaily.com/releases/2025/10/251010091555.htm https://www.sciencedaily.com/releases/2025/10/251005085621.htm Over 40% of fatal crash victims had THC levels far above legal limits, showing cannabis use before driving remains widespread. The rate didn’t drop after legalization, suggesting policy changes haven’t altered risky habits. Experts warn that the lack of public awareness around marijuana’s dangers behind the wheel is putting lives at risk. Sun, 05 Oct 2025 08:56:21 EDT https://www.sciencedaily.com/releases/2025/10/251005085621.htm https://www.sciencedaily.com/releases/2025/10/251004092919.htm A massive new study combining observational and genetic data overturns the long-held belief that light drinking protects the brain. Researchers found that dementia risk rises in direct proportion to alcohol consumption, with no safe level identified. Sat, 04 Oct 2025 23:42:39 EDT https://www.sciencedaily.com/releases/2025/10/251004092919.htm https://www.sciencedaily.com/releases/2025/10/251003033915.htm New research from Houston Methodist reveals how obesity may directly drive Alzheimer’s disease. Scientists discovered that tiny messengers released by fat tissue, called extracellular vesicles, can carry harmful signals that accelerate the buildup of amyloid-β plaques in the brain. These vesicles even cross the blood–brain barrier, making them powerful but dangerous connectors between body fat and brain health. Fri, 03 Oct 2025 03:39:15 EDT https://www.sciencedaily.com/releases/2025/10/251003033915.htm