HOME >> BIOLOGY >> NEWS
Perchlorate found in dairy and breast milk samples from across the country

In a new study of breast milk and store-bought milk from across the United States, scientists at Texas Tech University found perchlorate in every sample but one. The results suggest that this thyroid-disrupting chemical may be more widespread than previously believed.

The report was published Feb. 22 on the Web site of Environmental Science & Technology, a peer-reviewed journal of the American Chemical Society, the world's largest scientific society.

Perchlorate occurs naturally and is also a primary ingredient in solid rocket fuel. The chemical, which has been showing up in many segments of the environment, can interfere with iodide uptake in the thyroid gland, disrupting adult metabolism and childhood development.

The researchers, led by Professor Purnendu Dasgupta, Ph.D., of the university's department of chemistry and biochemistry, analyzed 47 dairy milk samples purchased randomly from grocery stores in 11 states, and 36 breast milk samples from women recruited at random in 18 states. Every sample of breast milk contained perchlorate, and only one sample of dairy milk contained no detectable levels.

The average perchlorate concentration in breast milk was 10.5 micrograms per liter; the dairy milk average was 2.0 micrograms per liter. No definitive national standard exists, although the U.S. Environmental Protection Agency had suggested a limit of 1.0 micrograms per liter in drinking water.

The researchers also found that high levels of perchlorate correlated with low levels of iodide in breast milk, which can inhibit thyroid function in nursing womenan essential component for proper neural development of the fetus. Although the data are limited, the levels of iodide in this study are sufficiently low to be of concern, according to the researchers. They suggest that the recommended daily intake of iodine for pregnant and nursing women may need to be revised upwards.

The American Chemical Society is a nonprofi
'"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
22-Feb-2005


Page: 1 2

Related biology news :

1. Waters off Washington state only second place in world where glass sponge reefs found
2. First new multiple sclerosis gene found in 30 years
3. Obesity found to be a risk factor for multiple myeloma
4. Antibody-altering protein found in developing B cells
5. New use for a cell toxin found to inhibit survival proteins in cancer cells
6. New way to target and kill antibiotic-resistant bacteria found
7. Soil particles found to boost prions capacity to infect
8. Support for chromosomal theory of cancer found in cancers development of drug resistance
9. Massive herds of animals found to still exist in Southern Sudan
10. Origins of nervous system found in genes of sea sponge, report scientists at UC Santa Barbara
11. Origins of nervous system found in genes of sea sponge

Post Your Comments:
(Date:7/24/2014)... different effects on different species of fish, according ... Bristol and Exeter which tested fish anti-predator behaviour. ... flying seagull predator model when exposed to additional ... minnows. , Lead author Dr Irene Voellmy ... levels in many aquatic environments have increased substantially ...
(Date:7/24/2014)... meaning the microbial populations found on surfaces in the ... final flavor according to research published ahead of print ... This is the first time investigators have taken a ... sake makers inoculate with both bacteria and yeast, says ... California, Davis, but he and his colleagues investigated a ...
(Date:7/24/2014)... NJIT this week for an all-day public forum on ... Agency (EPA) to dredge toxic sediment from an eight-mile ... has called the plan, which proposes removing 4.3 million ... the riverbed, one of the largest cleanups in the ... disposed off-site. , "We need to ensure the future ...
Breaking Biology News(10 mins):The microbes make the sake brewery 2Experts Weigh the Pros and Cons of a $1.7 Billion EPA Cleanup Plan for the Passaic River at an NJIT 2
(Date:7/24/2014)... forces worldwide rely on sophisticated equipment, trained personnel, ... public areas against terrorist attacks. A revolutionary new ... to make their job much easier. , The ... of Tel Aviv University ,s School of Chemistry ... by the Herzliya company Tracense, picks up the ...
(Date:7/24/2014)... natural and synthetic processes prefer to settle into ... energyit is within the realm of non-equilibrium conditions ... changes in energy and phases, such as temperature ... allow humans to regulate their body temperature, airplanes ... seismic activity. , But even though these ...
(Date:7/24/2014)... Calif. , July 24, 2014 SRI ... contract with the National Institute of Allergy and Infectious ... to conduct preclinical development of potential therapies for HIV ... drugs to treat HIV and AIDS and the complications ... as microbicides for preventing sexual transmission of HIV. ...
(Date:7/24/2014)... -- Neogen Corporation (Nasdaq: NEOG ) advised market ... from new rodenticide research are premature. In its regular ... 22, 2014, Neogen,s CEO commented about several new developments ... "It was my intent Tuesday at our conference call ... type of rodenticide, but certainly not to give any ...
Breaking Biology Technology:Nano-sized chip 'sniffs out' explosives far better than trained dogs 2New approach to form non-equilibrium structures 2National Institute of Allergy and Infectious Diseases Awards SRI International Contract to Study New Therapies for HIV and AIDS 2National Institute of Allergy and Infectious Diseases Awards SRI International Contract to Study New Therapies for HIV and AIDS 3Neogen comments on SenesTech 2
Cached News: