Temp Synthesis
The dust in our homes and the air we breathe harbor a complex stew of chemicals. Some, like oxygen, sustain life. Others are pollution stemming from things like car exhaust or from tiny scraps of household products. A pair of new studies adds a level of much-needed detail about exactly how widespread such toxic exposures can be.
A new analysis, published Wednesday in Environmental Science & Technology, reaffirmed that consumer product chemicals including phthalates, phenols and flame retardants are ubiquitous components of household dust. These substances are present at such high levels that researchers say it is likely we are inhaling and accidentally eating small amounts of these chemicals every day, although we don't yet know whether this …show more content…
In mice and rats, ingesting high doses of DEHP interferes with the development of the male reproductive system and is linked to liver cancer. When the investigators ranked the chemicals according to how much preschool-aged children were likely to ingest, the flame retardant tris(2-chloroethyl) phosphate (TCEP) came out on top. TCEP has been linked to cancer and brain damage in mice, but like many of these household chemicals we don't know whether it might be dangerous to …show more content…
“In essence they are molten droplets,” Maher says. ”If they cool quickly enough, they keep that spherical shape.”
The particles are small enough that they can enter the brain through the olfactory nerve via the nose. Nobody has yet proved that magnetite contributes to Alzheimer's or any other disease—magnetite has been detected previously in the brains of some Alzheimer’s patients—but the mineral is known to create free radicals that can damage cells. As a result, Maher believes it is “highly improbable” that the particles' presence in the brain is harmless.
“The levels of magnetite they found in the brain are much higher than have been found in other studies,” says Jon Dobson, who studies magnetic nanoparticles in biomedicine at the University of Florida and was not involved in the study. There is a chance the high levels were from accidental contamination in the lab, in spite of the researchers' careful steps to avoid it, he says. But if the high levels are simply due to the patients being exposed to high levels of pollution, future studies involving a control group from less polluted areas could confirm the
A new analysis, published Wednesday in Environmental Science & Technology, reaffirmed that consumer product chemicals including phthalates, phenols and flame retardants are ubiquitous components of household dust. These substances are present at such high levels that researchers say it is likely we are inhaling and accidentally eating small amounts of these chemicals every day, although we don't yet know whether this …show more content…
In mice and rats, ingesting high doses of DEHP interferes with the development of the male reproductive system and is linked to liver cancer. When the investigators ranked the chemicals according to how much preschool-aged children were likely to ingest, the flame retardant tris(2-chloroethyl) phosphate (TCEP) came out on top. TCEP has been linked to cancer and brain damage in mice, but like many of these household chemicals we don't know whether it might be dangerous to …show more content…
“In essence they are molten droplets,” Maher says. ”If they cool quickly enough, they keep that spherical shape.”
The particles are small enough that they can enter the brain through the olfactory nerve via the nose. Nobody has yet proved that magnetite contributes to Alzheimer's or any other disease—magnetite has been detected previously in the brains of some Alzheimer’s patients—but the mineral is known to create free radicals that can damage cells. As a result, Maher believes it is “highly improbable” that the particles' presence in the brain is harmless.
“The levels of magnetite they found in the brain are much higher than have been found in other studies,” says Jon Dobson, who studies magnetic nanoparticles in biomedicine at the University of Florida and was not involved in the study. There is a chance the high levels were from accidental contamination in the lab, in spite of the researchers' careful steps to avoid it, he says. But if the high levels are simply due to the patients being exposed to high levels of pollution, future studies involving a control group from less polluted areas could confirm the