Friday, April 13, 2012

Effects of Environmental Toxicants Reach Down Through Generations

Previous studies and research have shown that pesticides and fungicides have negative side effects on an exposed animal and its next three generations.  However, recent studies have shown that a greater variety of toxicants can affect the exposed animals next three generations.  According to the article, these new toxicants include: "jet fuel, dioxin, plastics, DEET, and permethrin."  When the animal is exposed to such harmful toxins, its DNA sequence remains the same, but instead they change the way its genes turn off and on.

This study was carried out to study pollutants that U.S. troops may be surrounded by.  Scientists exposed pregnant female rats to relatively high, but non-fatal, amounts of the toxins.  They then tracked any changes in the three generations of offspring.  The results showed that "females reached puberty earlier, increased rates in he decay and death of sperm cells, and lower numbers of ovarian follicles that later become eggs."  Its interesting to see how these pollutants have such an effect on animals such as rats.  These toxicants are obviously not good for humans to be around as well, but I wonder if they could have similar effects in humans like they do in rats.

3 comments:

  1. Articles like these need to be viewed by everyone, because as you stated, who knows what the effects in humans could be. I, personally, do not want my interation with any specific compound of affect my children, my grandchildren and even great grandchildren. It goes to show that every action we make now has a reaction tomorrow. There are so many products that we use daily, like plastic, that have toxins in them and we do not notice immediate results within our own bodies. Pesticides that have a negative effect of these rats are most likely going to have a harmful effect on us, and pesticides are put on most food crops!

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  2. This honestly was a shock since i use insect repellent quite often when i go fishing or crabbing. It is a shame than many of these products are still on the shelves and more steps toward safer and alternative methods are not being taken.

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  3. This is intense since we use insect repellent to fight off insects that could make us sick and cause damage to us, but the very thing protecting us is actually causing the same amount or more damage potentially. Also, this shows we need more studies like this to protect ourselves and our troops.

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