Navigation Links
High levels of DDT in breast milk
Date:9/4/2012

The highest levels ever of DDT in breast milk have been measured in mothers living in malaria-stricken villages in South Africa. The values lie well over the limits set by the World Health Organization. DDT has been used for many years in South Africa, sprayed indoors to fight malaria.

"To our ears, spraying DDT inside people's homes sounds absurd. But it is one of the most effective agents against malaria. And by only spraying adult mosquitoes in the vicinity of people, the risk of developing resistance in mosquitoes decreases, " says Henrik Kylin, environmental chemist and professor at Water and Environmental Studies, Linkping. Together with South African researchers and doctors, he is collaborating on a project to map the effects of DDT on the population.

"We know a lot about how DDT affects nature and animals, but the effects on people's health are not as well studied, especially concerning long-term exposure."

In a newly published article, the researchers report on a study of DDT levels in breast milk from nursing mothers in four villages, of which three are afflicted by malaria. DDT has been used continuously in these three villages for more than 60 years. The spray treatment takes place a couple of times a year and is carried out by specially trained and equipped staff.

The levels proved to be unacceptably high in the villages sprayed. They were well over (100 times greater) the highest daily dosage recommended by WHO. In once case they measured the highest known level of DDT in breast milk ever, more than 300 times higher than the level allowed in cow's milk.

DDT has been associated with diagnoses such as breast cancer, diabetes, impaired sperm quality, spontaneous abortions, and neurological disorders in children. In the region where the measurements were carried out, malformed genitalia among boys was significantly more common in areas treated with DDT compared with untreated areas.

Unexpectedly, large differences occurred between the treated villages. Despite apparently similar conditions, the measured DDT levels were twice as high in one treated village compared with one of the others. A whole range of factors may come into play here, such as procedures in connection with treatment, the condition of the walls, ventilation, people's behaviour and cleaning habits. Identifying these factors, the researchers write, could contribute to decreasing exposure, thereby also the risk for both mothers and children.

"Unfortunately the smallest children are exposed to the highest DDT levels; they are also extra sensitive to chemical influence," Kylin says.


'/>"/>

Contact: Henrik Kylin
henrik.kylin@liu.se
46-132-82278
Linkping University
Source:Eurekalert

Related biology news :

1. PCBs levels down in Norwegian polar bears
2. Growing nitrous oxide levels explained
3. High levels of TRAIL protein in breast milk might contribute to anticancer activity
4. Research!America says house funding levels for FY13 could undermine medical progress
5. Mercury in dolphins: Study compares toxin levels in captive and wild sea mammals
6. Cardio fitness levels of breast cancer patients may affect survival
7. UCSB anthropologists finds high levels of omega-3 fatty acids in breast milk of Amerindian women
8. Increasing levels of carbon dioxide in Arctic coastal seas
9. New study: Snacking on raisins significantly reduces overall post-meal blood sugar levels
10. Low vitamin D levels linked to weight gain in some older women
11. Lab-on-a-chip detects trace levels of toxic vapors in homes near Utah Air Force Base
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/21/2016)... WAKEFIELD, Massachusetts , March 22, 2016 ... and facial recognition with passcodes for superior security ... MESG ), a leading provider of secure digital communications ... pilot their biometric technology and offer enterprise customers, particularly ... provide secure facial recognition and voice authentication within a ...
(Date:3/14/2016)... -- NXTD ) ("NXT-ID" or the "Company"), a ... airing of a new series of commercials on Time Warner ... st .  The commercials will air on Bloomberg TV, Fox ... Street show. --> NXTD ) ("NXT-ID" or the ... announces the airing of a new series of commercials on ...
(Date:3/10/2016)... Pa. , March 10, 2016   Unisys Corporation ... Customs and Border Protection (CBP) is testing its biometric ... San Diego to help identify certain non-U.S. ... . The test, designed to help determine the efficiency ... environment, began in February and will run until May 2016. ...
Breaking Biology News(10 mins):
(Date:4/27/2016)... ... ... Shimadzu Scientific Instruments (SSI) will be showcasing a broad ... Expo. Shimadzu’s high-performance instruments enable laboratories to test cannabis products for potency, moisture, ... booth 1021 to learn how Shimadzu’s instruments can help improve QA/QC testing, peak ...
(Date:4/27/2016)... British Columbia , April 27, 2016 /PRNewswire/ ... oder "NanoStruck") (CSE: NSK) (OTCPink: NSKQB) ( ... im Anschluss an ihre Pressemitteilung vom 13. August ... erhalten hat, ihre Finanzen um zusätzliche 200.000.000 Einheiten ... 4.000.000 Kanadische Dollar zu bringen. Davon wurden 157.900.000 ...
(Date:4/27/2016)... ... April 27, 2016 , ... ... Clark has joined the company as an Expert Consultant. Mr. Clark was ... collaborations and managing the development of small molecule monographs based on analytical methods. ...
(Date:4/27/2016)... MIAMI (PRWEB) , ... April 27, 2016 , ... ... joined the GSCG Advisory Board. Ross is the founder of GSCG affiliate Kimera Labs ... of Miami, where he studied hematopoietic stem cell transplantation for hematologic disorders and the ...
Breaking Biology Technology: