All articles tagged with #contamination
A 22-year-old Southbridge McDonald’s night manager, Kaylie Santos, is charged with distributing food with a harmful substance after allegedly placing her saliva on fries served to her ex‑girlfriend; police say a Snapchat video captured the act, and arraignment is set for June 5. Authorities say no other customers were affected and there were no public health concerns.
Researchers analyzing dust and fibers from the Turin Shroud identified plant DNA—carrot, bread wheat, maize, peanuts, and various fruits—suggesting contamination over time rather than revealing the cloth’s age; metagenomic DNA cannot confirm origin, while radiocarbon dating in 1988 placed the cloth at 1260–1390 AD and a 2024 analysis hinted at a date closer to 2,000 years, with the final results not yet published.
Researchers analyzing dust and fibers from the Shroud of Turin report plant DNA—carrot, bread wheat and other crops—signalling contamination over time rather than confirming the relic’s age; they caution metagenomics can’t reliably date the cloth, even as radiocarbon dating in 1988 placed it medieval (1260–1390 AD) and 2024 WAXS results broadly align with a two-millennium history.
Researchers analyzing Martian meteorites found ballpoint pen ink contamination likely introduced during Earth-based handling, highlighting contamination risks in planetary sample prep and underscoring the need for standardized, contamination-aware protocols as space missions return Martian material.
A Basque Country team analyzed six Martian meteorite slices and found traces of ballpoint-pen ink and other contaminants tied to sample processing, not Martian material. Using Raman spectroscopy, they identified seven contaminants, including a copper compound, printer-ink molecules, and blue polyester, across samples with and without prior processing. While analytic methods can distinguish these contaminants, the study underscores the lack of standardized, contamination-aware prep protocols and proposes steps to minimize leftovers as future Mars sample-return missions proceed.
A HuffPost piece explains that prewashed bagged greens are among the riskiest grocery items due to contamination by pathogens like E. coli, listeria, and salmonella, which can spread across the supply chain. Washing at home doesn’t reliably remove these pathogens, and mixing greens from multiple farms in processing can amplify spread. For safer shopping, check recalls and expiration dates, choose visibly fresh bags with minimal moisture, minimize temperature changes, and refrigerate properly; buying whole heads of lettuce or spinach can reduce risk. If you must buy bagged greens, follow precautionary steps and discard any bags that show signs of spoilage or recalls.
A Fortune/Yahoo report notes that several scientists are challenging recent warnings about microplastics harming human health, arguing that many high-profile findings may be due to methodological issues, contamination, and false positives (for example, Py-GC-MS signals can be confused by fat in tissue). Some researchers say rising obesity could better explain observed health problems, and they call for more robust, standardized techniques before policy changes or costly “detox” treatments. Experts also urge precautionary steps but warn against sensational claims while the field remains immature and in need of rigorous validation.
In a small, not-yet-peer-reviewed study of 10 men with prostate cancer, researchers found microplastics in 90% of tumor samples and 70% of nearby noncancerous tissue, with higher concentrations in tumors. The findings are preliminary, the study took extensive contamination precautions, and larger studies are needed to determine any causal link or health implications.
Meijer is recalling more than 38,000 gallons of Steam Distilled Water sold in Illinois, Indiana, Kentucky, Ohio, Michigan and Wisconsin due to a possible foreign substance; the affected one-gallon jugs with red lids have sell-by date Oct. 4, 2026, lot code 39-222 #3, product ID 472859 and Meijer item code 477910.
A growing critique argues that many studies claiming microplastics in human bodies may be flawed, due to Py-GC-MS measurement flaws that can mistake tissue fats for plastics, and inadequate contamination controls. Critics point to 18 papers with questionable methods, highlighting that the field is nascent and that hard proof of health impacts is still lacking, though the possibility of plastics in humans isn’t fully ruled out.
Researchers are questioning how microplastics are detected in human tissues, pointing to contamination and lack of validation in key studies. An International Science Council review catalogs about 7,000 studies on the topic; meanwhile new detection methods from the Medical University of Vienna aim to improve accuracy, though broad consensus may take years. While some scientists defend findings, experts urge cautious interpretation and measured policymaking to avoid alarm.
Scientists are questioning the reliability of studies that detect microplastics in human tissues, citing contamination risks and flawed methods that could inflate results. A Guardian report and reviews of thousands of papers highlight potentially problematic studies, fueling calls for improved methodologies before drawing health conclusions or guiding policy.
A wave of high-profile claims that microplastics permeate human tissues—from brain to blood—faces fresh scrutiny, with researchers citing contamination, blanks and inadequate validation as likely causes; experts urge robust, multi-method verification as the field matures and warn against policy decisions based on fragile findings.
The FDA has issued a widespread recall of thousands of products, including Tylenol, Advil, Haribo candies, Welch's juice, and Purina pet food, due to contamination from rodent and bird droppings at a Minnesota distribution facility, posing health risks to consumers.
A Minnesota-based grocery distributor, Gold Star Distribution, has recalled hundreds of products sent to over 50 stores across Minnesota and nearby states due to unsanitary conditions at their Minneapolis facility, including rodent and bird droppings, which pose a risk of contamination, though no illnesses have been reported.