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A new study has raised concerns about glucosamine, a widely used supplement for joint pain and arthritis. Researchers found that people with mild cognitive impairment who regularly used glucosamine were about 25% more likely to progress to Alzheimer’s disease compared to non-users. The study also identified potential biological mechanisms that may help explain this association, although the exact cause-and-effect relationship remains unclear. Experts stress that the findings do not prove glucosamine causes Alzheimer’s, and more research is needed to confirm the results. However, the study highlights the importance of evaluating the long-term effects of commonly used supplements, especially among older adults at risk of cognitive decline.

A persistent headache, occasional dizziness, memory lapses, or unexplained fatigue are often blamed on stress, lack of sleep, or migraines. However, experts warn that in some cases these symptoms can signal a brain tumour. While most headaches are not cancer-related, warning signs such as worsening headaches, seizures, vision changes, balance problems, speech difficulties, or sudden changes in behavior should not be ignored. Early diagnosis is crucial, as it can improve treatment options and outcomes. Advances in minimally invasive surgery, AI-assisted navigation, and precision diagnostics are also transforming brain tumour care, helping patients recover faster and improving survival rates.

Many people use the terms “headache” and “migraine” interchangeably, but they are not the same. A headache is a broad term for pain or pressure in the head or neck and can be caused by stress, sinus issues, dehydration, or even uncorrected vision problems. Migraines, on the other hand, are a neurological condition that often causes intense, throbbing pain and may be accompanied by nausea, sensitivity to light or sound, and visual disturbances. Experts also note that recurring headaches can sometimes be linked to refractive errors such as short-sightedness, long-sightedness, or astigmatism. Understanding the difference can help ensure proper treatment and identify symptoms that may require medical attention.

A new case study has sparked interest in the potential of psilocybin-containing mushrooms as a treatment for Alzheimer’s disease. Researchers reported that an 80-year-old woman with advanced Alzheimer’s showed notable improvements in memory, communication, mobility, emotional expression, and daily functioning after receiving psilocybin. The patient had lived with the disease for nearly a decade and required constant care due to severe cognitive decline. While scientists emphasize that the study does not demonstrate a cure or reversal of Alzheimer’s, the findings suggest that some lost brain functions may remain dormant and could potentially be reactivated under certain conditions. Larger clinical studies are needed to confirm these promising early observations.

A new study suggests that ultra-processed foods may be doing more than harming physical health—they could also affect brain function. Researchers from Harvard T.H. Chan School of Public Health found that older adults who consumed the highest amounts of ultra-processed foods, such as chips, biscuits, and sugary drinks, had a 58% higher risk of developing dementia and a 46% higher risk of cognitive impairment compared to those who ate the least. The study followed more than 5,300 adults aged 50 and older for nearly ten years. In contrast, diets rich in minimally processed foods were associated with a significantly lower risk of cognitive decline, highlighting the importance of healthy eating for long-term brain health.

Bumblebees may be smarter than we ever imagined. In a new study, buff-tailed bumblebees successfully figured out how to use a small ball as a ladder to reach sugar hidden in an out-of-reach artificial flower. Remarkably, the insects were not trained to solve the puzzle and had no prior experience with similar tasks. More than 70% of the bees independently discovered the solution, even when obstacles made the challenge more complex. Researchers believe the findings provide the first clear evidence of spontaneous problem-solving in an invertebrate. The study adds to growing evidence that bumblebees possess advanced cognitive abilities, including learning, memory, and possibly even emotions.

Researchers are raising concerns about free-living amoebae, microscopic organisms found in water and soil that can sometimes cause severe and even deadly infections in humans. Beyond their direct health risks, these amoebae can also act as protective hosts for harmful bacteria and other microbes, helping them survive water treatment processes. Scientists warn that climate change, rising temperatures, and aging water infrastructure may create conditions that allow these resilient organisms to spread more widely in the future. While infections remain relatively rare, experts emphasize the need for improved monitoring, water management, and public awareness to better understand and reduce potential health risks.

A rapidly growing koala population in South Australia is raising concerns among wildlife experts, who warn that the animals could face widespread starvation if current trends continue. In some regions, koala numbers have increased to the point where forests are struggling to provide enough food, putting both the animals and their habitat under pressure. Researchers caution that without intervention, overgrazing could lead to habitat degradation, declining koala health, and large-scale population crashes. To avoid this outcome, scientists are recommending targeted fertility-control programs as a humane way to balance koala numbers, protect ecosystems, and ensure the long-term survival of these iconic marsupials.

Researchers have discovered a way to dramatically boost heat transfer at the nanoscale using specially designed gold metamaterials. In their experiments, these advanced materials enabled up to four times more energy flow across tiny gaps compared to conventional systems. The breakthrough takes advantage of unusual heat behavior that emerges at extremely small scales, where traditional rules of heat transfer no longer fully apply. Scientists believe this innovation could help solve critical challenges in electronics by improving chip cooling, while also enhancing energy harvesting and thermal management technologies. The findings open exciting possibilities for a new generation of precision-engineered heat and energy systems.

Scientists have identified a previously unknown trigger involved in Alzheimer’s disease and developed an experimental drug that may help stop it. The treatment targets a harmful process occurring inside brain cells that contributes to nerve cell damage and disease progression. In laboratory studies, mice treated with the compound showed slower loss of neurons, fewer Alzheimer’s-related brain changes, and signs of healthier aging overall. While the research is still in its early stages and human trials are needed, the findings offer promising new insights into how Alzheimer’s develops and suggest a potential new strategy for protecting the brain from age-related cognitive decline.