During the past 30 years the incidence of childhood cancer, asthma, autism, infertility, premature births, birth defects, and a range of other problems has increased. For example, from 1976 to 1994, there was a 30 percent increase in the incidence of all types of cancers for children under the age of one (Gurney et al., 1999). Infertility, a marker for reproductive hazards of toxic chemicals, is on the rise. In 2002, 7.4 percent of women were considered to be infertile and unable to have children. As many as one in six couples in the U.S. are affected by infertility and in more than half of these cases, male infertility is a main factor. This means at least 10% of men in the U.S. experience infertility. (more…)
Archive for November, 2011
By Niels E. Skakkebaek & Reproductive Research posted on renchemista.wordpress.com
Between 1990 and 2000 the U.S. teen pregnancy rate plummeted by 28 percent… What if there’s a third explanation, one that has nothing to do with just-say-no campaigns or safe-sex educational posters? What if teenagers are less fertile than they used to be?” “Our Stolen Future” by Theo Colborn predicted this trend… Read it or check out Niels Skakkebaek’s sperm count studies.
Even a high school biology student could see the deformities in the tiny tadpolelike human sperm as they swam about under the microscope. In a single sample, some sperm might have two heads and others two tails, while another might have no head at all. Many didn’t swim right, showing total inactivity or frenetic hyperactivity instead of a strong, steady motion.
Because of the changes in sperm counts and quality and the increase of genital abnormalities had occurred over such a short period of time, the researchers ruled out genetic factors. Instead, the changes appeared due to some sort of environmental factor.”
Over the years, Niels Skakkebaek, a reproductive researcher at the University of Copenhagen, had seen more and more sperm abnormalities, as well as a drop in the typical sperm count. At the same time, the rate of testicular cancer had tripled in Denmark between the 1940s and the 1980s. Skakkebaek also noticed low sperm counts and unusual cells in the testes of men who eventually developed this type of cancer. Were the two findings connected? (more…)
Excellence in Improving Pediatric Care. Series of Educational Presentations –
This paper was developed under the Global Ecology and Oceanography of Harmful Algal Blooms (GEOHAB) core research project on HABs and Eutrophication and the GEOHAB regional focus on HABs in Asia. GEOHAB is supported by the International Oceanographic Commission (IOC) of UNESCO and by the Scientific Committee on Oceanic Research (SCOR), which are, in turn, supported by multiple agencies, including NSF and NOAA of the USA. This paper represents the views of the authors and is not made on behalf of IOC, SCOR or any of the sponsors. This is contribution number xxxx of the University of Maryland Center for Environmental Science.
By Glibert, PM, Azanza, R, Burford, M, Furuya, K, Abal, E, Al-Azri, A, Al-Yamani, F, Andersen, P, Anderson, DM, Beardall, J, Berg, GM, Brand, L, Bronk, D, Brookes, J, Burkholder, J-AM, Cembella, A, Cochlan, WP, Collier, JL, Collos, Y, Diaz, D, Doblin, M, Drennen, T, Dyhrman, S, Fukuyo, Y, Furnas, M, Galloway, J, Gran¿�li, E, Ha, DV, Hallegraeff, G, Harrison, J, Harrison, PJ, Heil, CA, Heimann, Kirsten, Howarth, R, Jauzein, C, Kana, AA, Kana, TM, Kim, H, Kudela, R, Legrand, C, Mallin, M, Mulholland, M, Murray, S, ONeil, Judith, Pitcher, G, Qi, Y, Rabalais, N, Raine, R, Seitzinger, S, Salomon, PS, Solomon, C, Stoecker, DK, Usup, G, Wilson, J, Yin, K, Zhou, M, and Zhu, M (2008) Ocean urea fertilization for carbon credits poses high ecological risks. Marine Pollution Bulletin, 56 (6). pp. 1049-1056.
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The proposed plan for enrichment of the Sulu Sea, Philippines, a region of rich marine biodiversity, with thousands of tonnes of urea in order to stimulate algal blooms and sequester carbon is flawed for multiple reasons. Urea is preferentially used as a nitrogen source by some cyanobacteria and dinoflagellates, many of which are neutrally or positively buoyant. Biological pumps to the deep sea are classically leaky, and the inefficient burial of new biomass makes the estimation of a net loss of carbon from the atmosphere questionable at best. The potential for growth of toxic dinoflagellates is also high, as many grow well on urea and some even increase their toxicity when grown on urea. Many toxic dinoflagellates form cysts which can settle to the sediment and germinate in subsequent years, forming new blooms even without further fertilization. If large-scale blooms do occur, it is likely that they will contribute to hypoxia in the bottom waters upon decomposition. Lastly, urea production requires fossil fuel usage, further limiting the potential for net carbon sequestration. The environmental and economic impacts are potentially great and need to be rigorously assessed. (more…)
CBPR] Federal Agencies Seek Public Comment on Strategies to Protect People’s Health in Communities Overburdened by Pollution
The Obama Administration is committed to ensuring strong protection from environmental and health hazards for everyone, including those living in communities that are overburdened by pollution. Every federal agency has a unique and important role to play in ensuring that all communities receive the health and environmental protections they deserve. To that end, each Environmental Justice Interagency Workgroup (EJ IWG) agency is posting an environmental justice strategy on its website for public comment. (more…)
The evidence supporting the connection between exposure to these toxicants and childhood cancer is strongest for leukemia, brain and central nervous system cancers.
In one study of pesticide exposures, children with leukemia were 4 to 7 times as likely to have been exposed to pesticides used in the yard or garden compared to children without the disease. Another study found that children with leukemia were 11 times as likely to have mothers who were exposed to pesticide sprays or foggers during pregnancy compared to healthy children. (more…)
Physicians Warn Public To Avoid Pesticides
The Ontario College of Family Physicians (OCFP) in Canada is strongly recommending that people reduce their exposure to pesticides wherever possible, after releasing a comprehensive review of research on the effects of pesticides on human health., Systematic Review of Pesticides Human Health Effects shows consistent pesticide links to serious illnesses such as cancer, reproductive problems and neurological diseases, among others. The study also shows that children are particularly vulnerable to pesticides.
The Canadian review found consistent evidence of the health risks to patients with exposure to pesticides. “Many of the health problems linked with pesticide use are serious and difficult to treat – so we are advocating reducing exposure to pesticides and prevention of harm as the best approach,” said Dr. Margaret Sanborn of McMaster University, one of the review’s authors.
Given the wide range of commonly used home and garden products associated with health effects, the College’s overall message to patients is to avoid exposure to all pesticides whenever and wherever possible. This includes reducing both occupational exposures, as well as lower level exposures that occur from the use of pesticides in homes, gardens and public green space.
The College also advocates exposure reduction techniques such as: Researching and implementing alternative organic methods of lawn and garden care and indoor pest control. (more…)