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Health officials are investigating lettuce and other salad greens as the leading suspected source of a growing multistate Cyclospora outbreak, a parasitic infection that causes watery diarrhea and other gastrointestinal symptoms. While early evidence points to leafy greens, investigators have not yet identified a specific product, grower, or supplier, and other food sources have not been ruled out. Cyclospora is typically spread through contaminated food or water rather than person-to-person contact. Experts advise consumers to wash fresh produce thoroughly, practice good food hygiene, and seek medical attention if persistent diarrhea develops. The investigation remains ongoing as health authorities work to identify the exact source.

Researchers have identified a promising new strategy to combat obesity-related leukemia by combining GLP-1 weight-loss drugs with anti-inflammatory medications. The study found that obesity promotes leukemia growth by triggering chronic inflammation and disrupting normal metabolic signaling. In mouse models, combining a GLP-1 drug with an IL-17A-blocking therapy reduced leukemia burden, improved immune function, and slowed disease progression. Because both types of drugs are already approved for other conditions, the findings could accelerate future clinical trials. While the results are encouraging, further research is needed to confirm whether this combination therapy is safe and effective in people with obesity-associated leukemia.

A large review of existing studies suggests that people who consume the highest amounts of chili peppers may have an increased risk of esophageal cancer. However, the researchers stress that the findings show an association rather than a direct cause-and-effect relationship. Evidence linking chili pepper consumption to stomach and colorectal cancers was less consistent, highlighting the need for further research. It also remains unclear whether moderate chili intake carries the same risk. Until more definitive evidence is available, experts recommend maintaining a balanced diet and considering overall dietary patterns rather than focusing on a single food when assessing cancer risk.

Eating one avocado daily may help reduce a key risk factor for heart disease in adults with obesity, according to a new study. Researchers found that regular avocado consumption lowered the number of low-density lipoprotein (LDL) particles in the blood, corresponding to an estimated 4% reduction in heart disease risk. Unlike LDL cholesterol alone, a higher number of LDL particles is linked to greater cardiovascular risk because smaller particles can more easily build up in artery walls. While the benefit is modest, researchers say adding an avocado to a balanced diet could be a simple, practical step toward improving heart health without requiring major dietary changes.

Researchers are proposing a simple finger-prick blood test that measures the glucose ketone index (GKI) to monitor metabolic health in cancer and other chronic diseases. The test compares blood glucose and ketone levels, providing insight into the body's metabolic state and mitochondrial function. Scientists believe GKI could help track the effects of diet, fasting, and exercise interventions, particularly those aimed at achieving nutritional ketosis. However, they emphasize that the test is not a cure or a standalone diagnostic tool, and disease-specific target ranges still need validation through larger clinical studies. If confirmed, GKI could become a valuable tool for personalized disease management and prevention.

Researchers have developed an ultrasensitive gold nanoparticle-based biosensor that can detect early-stage liver fibrosis using just a small blood sample. The device identifies PICP, a protein released during the formation of liver scar tissue, by measuring tiny electrical changes when the biomarker binds to antibodies on the sensor. In patient testing, the technology achieved 95.24% sensitivity and 100% specificity, accurately distinguishing people with liver fibrosis from healthy individuals. Because it requires only a simple blood test and no painful liver biopsy, the biosensor could pave the way for portable, affordable diagnostic devices that enable earlier detection and treatment of chronic liver disease.

Processed meats such as bacon, ham, and sausages often contain nitrates and nitrites that can form potentially cancer-causing compounds under certain conditions. Research shows that cancer risk is influenced not only by these additives but also by factors such as heme iron, smoking, and high-temperature cooking. The strongest evidence links regular processed meat consumption to an increased risk of colorectal cancer, prompting health experts to recommend limiting intake. Importantly, products labeled as "natural" or cured with vegetable-derived nitrates are not necessarily free from nitrites or cancer-related compounds. Choosing fresh protein sources, increasing dietary fiber, and avoiding heavily charred meats can help reduce overall cancer risk.

A preliminary study suggests that spending just 10 minutes on an evening skincare routine combined with gentle self-massage may help women sleep better and feel less anxious. After four weeks, participants reported improved sleep quality, reduced time to fall asleep, better mental well-being, and lower anxiety levels compared with those who maintained their usual routines. Exploratory wearable-device data also indicated longer total and deep sleep on rest days. However, the researchers caution that the study was small, non-randomized, and funded by a cosmetics company, making it impossible to determine whether the benefits came from the massage, skincare products, fragrance, or the relaxing bedtime routine itself.

Scientists have discovered that donated human retinas can remain responsive to light for up to 10 hours after death when supplied with oxygen and nutrients using a specialized artificial circulation system. While this does not mean vision or consciousness can be restored after death, it marks a major advance in vision research. The breakthrough allows researchers to study living human retinal tissue for longer, improving efforts to understand diseases such as age-related macular degeneration and diabetic retinopathy. The findings could accelerate the development of new drugs, gene therapies, and regenerative treatments, while also highlighting the vital role of eye donation in advancing medical research.

A new study suggests that acanthosis nigricans—dark, velvety patches of skin commonly seen on the neck or underarms—may be an early warning sign of kidney disease in people with type 2 diabetes. Researchers found that diabetic patients with moderate-to-severe acanthosis nigricans were more than four times as likely to have diabetic kidney disease compared with those without the condition. Because the skin change is easy to spot during a routine examination, it could serve as a simple, low-cost screening tool, especially in resource-limited settings. While it does not cause kidney disease, it may indicate underlying insulin resistance and the need for closer kidney health monitoring.