Nieuws chemicaliŽn

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ChemicaliŽn en psyche

Bijna iedereen denkt dat chemische stoffen alleen lichamelijke symptomen kunnen veroorzaken. Maar er wordt steeds meer bewijs gevonden (onder meer door natuurgenezers) dat alledaagse huishoudmiddelen de oorzaak kunnen zijn van een heel scala van zogenaamde mentale verschijnselen: van paniek tot hyperactiviteit.



Chemical Additives - Are They Slowly Killing Our Children?

Let me start by saying a chemical additive doesn't necessarily 'appear' to be a problem immediately after ingestion. Quite often the effects are cumulative; a gradual build-up in the body produces roller-coaster days, some good, some bad. Some children are more sensitive to food chemicals and display immediate effects soon after ingestion of additives, colours in particular. In small amounts additives are not harmful. Effects are dose related and, tragically, dose for weight, children are consuming several times more additives than the acceptable daily intake (ADI). Before we get into the details of the most common problem foods, it is necessary to understand the testing and approval process, with emphasis on those factors that may confer the level of risk of toxic additives in infants and young children's diets.

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PFOS and PFOA exposure associated with lower birth weight and size

Exposure to perfluorooctane sulfonate and perfluorooctanoate in the womb is statistically associated with lower weight and head circumference at birth, according to an analysis of nearly 300 umbilical cord blood samples led by researchers at the Johns Hopkins Bloomberg School of Public Health.

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A cohort study of in utero polychlorinated biphenyl (PCB) exposures in relation to secondary sex ratio

Polychlorinated biphenyls (PCBs) are ubiquitous industrial chemicals that persist in the environment and in human fatty tissue. PCBs are related to a class of compounds known as dioxins, specifically 2,3,7,8-TCDD (tetrachloro-dibenzodioxin), which has been implicated as a cause of altered sex ratio, especially in relation to paternal exposures.

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Toxic chemicals found in common scented laundry products, air fresheners

A University of Washington study of top-selling laundry products and air fresheners found the products emitted dozens of different chemicals. All six products tested gave off at least one chemical regulated as toxic or hazardous under federal laws, but none of those chemicals was listed on the product labels.

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Chemical Causes of Diabetes - Overeating Is Not the Only Problem

Medical science has discovered how sensitive the insulin receptor sites are to chemical poisoning. Metals such as cadmium, mercury, arsenic, lead, fluoride and possibly aluminum may play a role in the actual destruction of beta cells through stimulating an auto-immune reaction to them after they have bonded to these cells in the pancreas. It is because mercury and lead attach themselves at highly vulnerable junctures of proteins that they find their great capacity to provoke morphological changes in the body. Changes in pancreatic function are among the pathogenetic mechanisms observable during lead intoxication.

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Chemicals used as fire retardants could be harmful, UC-Riverside researchers say

Margarita Curras-Collazo's lab at the University of California-Riverside has done research that shows that polybrominated diphenyl ethers, chemicals used as fire retardants, disrupt mechanisms that are responsible for releasing hormones in the body. Moreover, her lab has shown that like polychlorinated biphenyls, whose manufacture in the US was discontinued in 1977, PBDEs alter calcium signaling in the brain.

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Agent Orange Chemical, Dioxin, Attacks The Mitochondria To Cause Cancer, Study Shows

Researchers with the University of Pennsylvania School of Veterinary Medicine have demonstrated the process by which the cancer-causing chemical dioxin attacks the cellular machinery, disrupts normal cellular function and ultimately promotes tumor progression.

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Nurses threatened by chemicals

The very chemicals used to keep hospitals squeaky clean and to treat patients could be harmful to nurses who are exposed to them in their daily duties, according to a study released this week by an environmental group.

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The mass poisoning of humanity - an exploration of human stupidity

As human beings, we're the only species stupid enough to actually poison ourselves. As part of modern living, we create a wide variety of chemical toxins that go into the ecosystem through rivers and streams, the air, the soil and so on. Not only that, we actually synthesize toxic chemicals and then inject them directly into the food supply -- knowing full well that they are poisonous and are major contributors to the epidemic rates of chronic disease we are experiencing today.

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Household Exposure to Toxic Chemicals Lurks Unrecognized, Researchers Find

Although Americans are becoming increasingly aware of toxic chemical exposure from everyday household products like bisphenol A in some baby bottles and lead in some toys, women do not readily connect typical household products with personal chemical exposure and related adverse health effects, according to research from the December issue of the Journal of Health and Social Behavior. Brown University sociologist Phil Brown is a co-author of the study. “People more readily equate pollution with large-scale contamination and environmental disasters, yet the products and activities that form the backdrop to our everyday lives — electronics, cleaners, beauty products, food packaging — are a significant source of daily personal chemical exposure that accumulates over time,” said sociologist Rebecca Gasior Altman, lead author of the study, “Pollution Comes Home and Gets Personal - Women’s Experience of Household Chemical Exposure.” Altman received a Ph.D. from Brown in 2008.

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Exposure to organochlorate pollutants and lead weakens animals bones, according to a study

A new methodology developed by a researcher of the University of Granada will permit to determine the toxicological effects caused in animals which have been exposed to organochlorate pollutants and lead analysing their bones. This work has studied the effects of lead toxicity in the long term in wild birds populations, determining how this heavy metal causes bone weakening and fracture, provoking therefore a fall in the individual survival of the affected species. This work has been carried out by Pedro Ńlvarez Lloret, of the Department of Mineralogy and Petrology of the University of Granada, in collaboration with the University of Georgia (USA), the Karolinska Institute of Stockholm, the Research Institute for Hunting Resources (CSIC) and the Biological Station of DoŮana (CSIC). The research work has been supervised by Professor Alejandro RodrŪguez Navarro.

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Persistent pollutant may promote obesity

A persistent pollutant, tributyltin, has effects on gene activity in a wide range of animal species at concentrations of parts per billion. Tributyl tin and its chemical relatives bind to nuclear receptors that in turn activate genes influencing the formation of fat storage cells. This and other evidence suggests a possible role for tributyl tin in the obesity epidemic.

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U of M researchers discover fast-acting cyanide antidote

University of Minnesota Center for Drug Design and Minneapolis VA Medical Center researchers have discovered a new fast-acting antidote to cyanide poisoning. The antidote has potential to save lives of those who are exposed to the chemical -- namely firefighters, industrial workers and victims of terrorist attacks.

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