Researchers found amorphous silicon dioxide nanoparticles, widely used in processed food, supplements and cosmetics, prompted human epithelial and endothelial cell lines to produce high levels of TNF-alpha and IL-8, an effect potentiated by monocytic THP-1 cells.
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Food Safety
Contaminants, chemicals, genetically engineered food and what is really in the food supply.
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Chemical
High exposure to fluoride may make men infertile
In a Toxicology International study, N. Kumar's team fed 60 male rabbits diets including fluoride and found it cut sperm count and motility. Vitamin E restored sperm count better than vitamin D did, and the two vitamins together brought count and motility close to normal.
Chemical
Is Your Food Exposing You To This Pesticide?
An interview with toxicologist Janette Sherman on endocrine disruptors, which are linked to breast cancer, infertility, low sperm counts and early puberty. Her 1999 paper anticipated later PNAS findings of structural brain changes in children exposed to chlorpyrifos in the womb.
Chemical
This pollutant could be riskier than pesticides
A Mycobiology study found silver nanoparticles at 100 ppm gave the greatest inhibition of fungal growth and spore germination in pepper anthracnose, working best when applied before an outbreak. The article notes plants take nanoparticles up and that nanoparticles are toxic to animals.
Chemical
This food ingredient can damage your DNA
Y. Li and colleagues exposed cultured human liver cells to silica nanoparticles of four sizes and saw lowered viability, DNA damage and more reactive oxygen species, with smaller particles doing greater harm. A second Chinese team reported similar results in skin cells.
Chemical
Trans fat linked to high risk of ischemic stroke
Among 87,025 women aged 50 to 79 in the Women's Health Initiative, those in the highest fifth of trans fat intake were 39% more likely to have an ischemic stroke than those in the lowest. Saturated, monounsaturated and polyunsaturated fats showed no such link. Annals of Neurology.
GMO
NEW Findings: A Surprising Potential Culprit Behind Arthritis, Bowel Disorders, MS, and Allergies
The report GMO Myths and Truths concludes that the scientific evidence does not support safety and yield claims for genetically engineered foods, naming three possible sources of harm and citing Russian findings of growth and fertility problems in animals fed GM feed.
Chemical
High fructose corn syrup linked to vascular/metabolic dysfunction
Rats drinking beverages with 10 or 20 percent high fructose corn syrup showed raised triglycerides, VLDL, insulin and blood pressure, impaired vessel relaxation and lower eNOS and SIRT1. Adding resveratrol at 50 mg/L offset some of those changes.
Seasonal Food Safety
Cancer Experts Offer Seasonal Advice for Safer Grilling
AICR dietitian Alice Bender says cooking meat, poultry or fish at high heat forms HCAs and PAHs, compounds that can theoretically damage DNA, and that diets heavy in red and processed meat make colorectal cancer more likely. She suggests filling the grill with vegetables and fruit.
Chemical
Cancer-causing agent in your soft drinks?
California added 4-methylimidazole, a byproduct of caramel coloring, to its Proposition 65 list of cancer-causing chemicals, prompting Coca-Cola, PepsiCo and Whole Foods to alter recipes. The FDA had refused CSPI's petition, insisting the coloring is safe.
GMO
Top 10 GMO (genetically modified organism) foods to avoid
A list of genetically modified or heavily altered foods to avoid, covering tomatoes engineered for a month-long shelf life, Bt cotton, canola, dairy from cows given growth hormones and corn. Aspartame is included, though the piece notes it is not a GMO.
GMO
Opting for This "Cheaper Food" Could Make You Age Faster
The California Right to Know campaign delivered 1 million signatures to put a genetically engineered food labeling measure on the November 6 ballot. Two cited studies put labeling's cost at roughly 0.01 percent of food prices, against industry warnings of sharply higher prices.
Chemical
Be aware of man-made toxins in your foods, dietary supplements
Rigitta Szalay's doctoral thesis found iron oxide nanoparticles delivered into rats' airways altered body and lung weights, damaged lung tissue, lowered IgM and IgG in the bronchioles and irreversibly injured alveolar cell membranes. Human A549 cells proved more sensitive than animal cells.
Chemical
The Toxin So Dangerous It's Causing Catastrophic Birth Defects
Mercola describes Argentina's turn to Roundup Ready soy and widespread reports of illness from heavy glyphosate spraying, including an Argentine scientist who confirmed glyphosate can potentially cause birth defects, sterility and neurotoxicity and says he was threatened and ridiculed.
Chemical
Bisphenol A may boost breast cancer risk
Pregnant rhesus macaques were fed fruit dosed with BPA until their blood levels matched those common in people. Their infants' mammary tissue was denser than that of unexposed infants, which in humans marks higher breast cancer risk, the researchers say.
Chemical
This additive in your food and cosmetics may cause cancer!
A 2009 Biomaterials review by N. Singh of Swansea University and colleagues found most engineered nanomaterials can provoke genotoxic responses, including DNA strand breaks and altered gene expression. Zinc oxide, titanium oxide and silica nanoparticles often go unlisted on labels.
Chemical
You barely notice it in processed food, but it can boost your cancer risk
Sycheva and colleagues fed mice micro- and nano-sized titanium dioxide for seven days and reported DNA damage in bone marrow and liver cells along with tissue damage elsewhere. They concluded the particles, common in food and cosmetics, are a potential health hazard.
Chemical
FDA wants more safety studies on nanoparticles in food and cosmetics
The FDA released two documents encouraging, though not yet requiring, food and cosmetics makers to run more safety tests on nanoparticles such as titanium oxide and silica dioxide, already used in cheeses, sauces, confectionery, soaps and sunscreens.
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