According to new study Chlorinated pools may lead to cancer

Any of these studies take into consideration the fact that along with adding chlorine...we also use sulfuric, muriatic and cyanuric acids in these pools? From Wiki: Cyanuric acid is classified as "essentially nontoxic". The 50% oral median lethal dose (LD50) is 7700 mg/kg in rats. However, when cyanuric acid is administered together with melamine (which by itself is another low-toxicity substance), they may form extremely insoluble crystals, leading to formation of kidney stones and potentially causing kidney failure and death -- as evidenced in dogs and cats during the 2007 pet food contamination and in children during the 2008 Chinese milk scandal cases. Just wondering...I didn't see anything about these lethal chemicals in the studies...

Then again, probably not everyone who is born today will be dead in 150 years. It can easily be possible that newborns can live a much longer life span than people live now. Nope. See cellular senescence, organismal senescence.

Lot of people seem to think this is a choice between two extremes: -- worry about every little thing that is reported -- ignore all of it and do what you want. Unfortunately, the news media tends to overstate the results and scope of research articles, I guess try to inject more excitement or something (almost without exception, the source articles are far more restrained. And I guess boring to most). Although there are certainly individual papers that are particularly significant and groundbreaking, for the most part consensus on a topic (eg the health effects of chlorinated DBPs) accumulates gradually. Instead of choosing between the two extremes, I would encourage anyeone to take everything with a grain of salt and just apply common sense. There really ARE synthetic chemicals out there that can cause health effects that can lower quality of life. Pay attention to information about the ones to which you would be exposed to at the highest concentrations and/or for the longest periods of time. Also avoid the ones that seem unnecessary, doing a sort of quick risk-benefit analysis (eg, do you REALLY need potentially harmful fire retardants on pillows?)

I believe a study on the exposure of prolonged contact of hairspray runoff from noodle class can make a story with an equivalent degree of concern. Another easy report.

What's the old saying? Eat well, Stay fit; Die anyways... We are all going to die someday, you can't prevent death. Everyone born 150 years ago is 100% dead...I am so sick of cancer studies...even breathing can cause cancer but I don't think any of us are going to try and stop that activity... :chillpill::chillpill: I would rather love and live my life to the fullest and go "home" when it's my time... :2cents: I gotta agree with you. It does seem that everytime one reads/hears the news there is something else causing cancer. We all probably know a person/people that have developed cancer that haven't been swimmers and that have been swimmers. I am not going to worry about the chemicals used in the pool, as long as the pool chemical are in balance. I have been to my local pool where the chemicals have been way off before. I have taken one look at it and decided not to swim that day. If the pool is being maintained properly, then I am not going to be swimming, worrying if the chemicals might be harmful. At somepoint, we all die. I don't see the point in worrying about every single thing that may or may not cause cancer.

Things that have happened such as a faulty Chlorinator. My brother was asked to help open a swim pool in Maryland that used a gas chlorinator to treat their commercial pool. The chlorinator was faulty and he was gassed. He was rushed to the hospital, and survived. He sufferred with his lungs for several years. Chlorine can be dangerous if not used properly.

as I tried to explain earlier, the new study does not...and none prior to that....indicate that chlorination in pool water causes cancer there is a small amount of medical literature suggesting that long term consumption of chlorinated drinking water may increase the risk for bladder cancer....but, a cause and effect relationship does not appear to be established the media accounts recently that pool chlorination may cause cancer is exaggerated media fear mongering that pushes positive stories about us off the pages

I have not seen a recent report on unchlorinated pools. Could this be more dangerous to health then chlorinated pools. Another hazardous item is to drive on the wrong side of the road.

See my recent post for another forum brother. Also, this: Science News ... from universities, journals, and other research organizations www.sciencedaily.com/.../bookmark.png Save www.sciencedaily.com/.../email.png Email www.sciencedaily.com/.../print.png Print www.sciencedaily.com/.../share.png Share Chemicals in Indoor Swimming Pools May Increase Cancer RiskSep. 14, 2010 — Swimming in indoor chlorinated pools may induce genotoxicity (DNA damage that may lead to cancer) as well as respiratory effects, but the positive health effects of swimming can be maintained by reducing pool levels of the chemicals behind these potential health risks, according to a new study published in a set of three articles online September 12 ahead of print in the peer-reviewed journalEnvironmental Health Perspectives (EHP). This study is the first to provide a comprehensive characterization of disinfection by-products (DBPs) in an indoor pool environment and the first to study the genotoxicity of exposure to these chemicals among swimmers in an indoor chlorinated pool. Share This: 308 DBPs form in pool water from reactions between disinfectants such as chlorine and organic matter that is either present naturally or is introduced by swimmers, such as sweat, skin cells, and urine. Previous epidemiologic studies have found an association between exposure to DBPs in drinking water and risk of bladder cancer, and one such study has found this association for dermal/inhalational exposure such as occurs during showering, bathing, or swimming. The new study details a comprehensive investigation of DBPs and mutagenicity of water samples collected from two indoor pools, one disinfected with chlorine, the other with bromine. In addition, short-term changes in biomarkers of genotoxicity and respiratory effects were studied in swimmers who swam in the chlorinated pool. No previous studies have combined investigations of the mutagenicity (ability to cause permanent DNA mutations) of pool water with a comprehensive chemical characterization of the water and studies of human exposures, the authors stated. Evidence of genotoxic effects were seen in 49 healthy adults after they swam for 40 minutes in the chlorinated pool. Specifically, researchers found increases in two genotoxicity biomarkers relative to the concentration of the most common types of DBPs in exhaled breath, which were used as a measure of the swimmers' exposures. The biomarkers that increased were micronuclei in blood lymphocytes, which have been associated with cancer risk in healthy subjects, and urine mutagenicity, which is a biomarker of exposure to genotoxic agents. Detailed measurements were also made of the most common exhaled DBPs (trihalomethanes) in air around the pool and in exhaled breath of the swimmers before and after swimming. Researchers measured several biomarkers of respiratory effects after swimming and found changes in only one -- a slight increase in serum CC16, which suggests an increase in lung epithelium permeability. This result was explained by the effects of exercise itself as well as exposure to DBPs. Further research is needed to sort out the clinical relevance of this acute change, the researchers stated. In addition, the authors identified more than 100 DBPs in the pool waters, some never reported previously in swimming pool water and/or chlorinated drinking water. In vitro assays showed that the swimming pool water was mutagenic at levels similar to that of drinking water but was more cytotoxic (can kill cells at a lower concentration) than drinking water. The human exposures studied were short-term, and further investigations of genotoxic and respiratory effects of longer-term exposures are needed, the authors stated. Also noted was a need for further research on an array of swimming pools under various conditions of maintenance and use, as well as more complete evaluations of the uptake and potential effects of the wide range of compounds present in pool water. These are preliminary results that should be confirmed in studies with larger sample sizes. This work was supported by the Spanish organizations Plan Nacional and Fondo de Investigación Sanitaria, Instituto de Salud Carlos III; and also by the U.S. Environmental Protection Agency.