Study Finds People Can be "Too Clean"
November 29, 2010 2:42 PM
comment(s) - last by
Using antibacterial soaps with triclosan excessively can cause immune system problems in those under 18
Researchers at the
University of Michigan
have discovered that an overexposure to triclosan in young people and an overexposure to Bisphenol A in adults can have
negative health effects
on the human body.
Allison Aiello, study leader and associate professor at the U-M School of Public Health, along with Erin Rees Clayton, co-author of the study at the U-M School of Public Health, have found that triclosan, which is found in antibacterial soaps, may
in young people while Bisphenol A, which is found in most plastics, can harm the adult immune system.
Previous research associated with triclosan and Bisphenol A has been conducted on animal models, but this is the first study to show how both toxicants influence human function.
Triclosan and Bisphenol A belong in a class of environmental toxicants called endocrine-disrupting compounds (EDCs) and can imitate or affect
causing negative health risks in humans. Bisphenol A can be found in plastics and protective linings in food cans, and triclosan can be found in antibacterial soaps, medical devices, toothpastes, pens and diaper bags.
The U-M researchers came to the conclusion that both triclosan and
Bisphenol A can negatively affect
the human body by utilizing data from the 2003-2006 National Health and Nutrition Examination Survey. Aiello and Rees Clayton compared cytomegalovirus (CMV) antibody levels and diagnosis of allergies/hay fever with urinary Bisphenol A and triclosan in a sample that consisted of U.S. adults and children over the age of six.
The results showed that people over the age of 18 with higher levels of Bisphenol A had increased CMV antibody levels. Rees Clayton said that this indicates that the person's "cell-mediated immune system" may not be working correctly.
In addition, Aiello and Rees Clayton found that those under the age of 18 with high levels of triclosan had an increased risk of developing allergies or hay fever.
"The triclosan findings in the younger age groups may support the 'hygiene hypothesis,' which maintains living in very clean and hygienic environments may impact our exposure to micro-organisms that are beneficial for development of the immune system," said Aiello.
Aiello also noted that people can be too clean. Using an excessive amount of antibacterial soaps with triclosan during childhood can change the way our immune systems develop by altering the micro-organisms we're normally exposed to.
Another finding showed that Bisphenol A exposure
depends on age
. Those over 18 who had higher Bisphenol A levels also had high CMV levels, but for those under 18, the opposite occurred. Researchers believe this means that the timing, quantity and length of exposure determines how the immune system is influenced by Bisphenol A.
The only issue with this study is that it measured exposure and disease at the same time, which shows only part of the overall picture.
"It is possible, for example, that individuals who have an allergy are more hygienic because of their condition, and that the relationship we observed is, therefore, not casual or is an example of reverse causation," said Aiello.
The U-M researchers hope to use this study to continue learning the long-term effects of triclosan and Bisphenol A in humans to see if they can develop a "causal relationship."
was published in
Environmental Health Perspectives
This article is over a month old, voting and posting comments is disabled
RE: Just what I've been saying
11/29/2010 4:17:01 PM
It's all a bit misleading if you ask me. Bear in mind, soap, even a 60 year old bar of Dial, will kill more than 99% of germs. It's pretty unlikely that getting rid of that last .9% is going to make much of a difference when it comes to training the immune system. Especially when you consider that about 20 seconds after washing you've already got all kinds of germs on your hands again.
What the research is really about is the effects of chemicals on the immune system. Chemicals like the Triclosan that has been added to soaps to make them 'antibacterial' (as opposed to regular soap which kills bacteria just fine).
"I modded down, down, down, and the flames went higher." -- Sven Olsen
Harvard Scientists Reverse Signs of Aging in Mice
November 29, 2010, 10:03 AM
Exposure to BPA, DES May Increase Breast Cancer Risk
May 31, 2010, 12:01 AM
Study Claims Early Childhood TV Viewing Doubles Asthma Risk
March 11, 2009, 9:02 AM
Got Juice? Largest Steroid Bust in World History
September 28, 2007, 2:36 PM
Microsoft Co-founder Paul Allen Donates $100M to Fight Raging Ebola Epidemic
October 23, 2014, 6:05 PM
Cool Science Video of the Day: Carnivorous Leech Eats Giant Jungle Worm
October 16, 2014, 6:44 PM
Facebook CEO and Founder, Mark Zuckerberg, Donates $25M to Fight Ebola
October 14, 2014, 5:06 PM
Chagrined Over Leaks, CDC Confirms First U.S. Ebola Diagnosis in Dallas, Texas
September 30, 2014, 5:55 PM
Nail Polish May Soon be Able to Detect Date Rape Drugs
August 26, 2014, 7:57 AM
SpaceX Falcon 9-R Rocket Suffers Malfunction, Self-Destructs During Test Flight
August 23, 2014, 9:36 AM
Most Popular Articles
Amid Theater Boycott Netflix Defiantly Plans New Movies, Plus 3 TV Shows for 2015
October 24, 2014, 7:30 PM
AT&T Defeats Purpose of New Apple SIM, Locks iPad Air 2 SIMs to Its Network
October 24, 2014, 2:17 PM
CVS, Rite Aid Kill Unofficial Apple Pay Support, Burn Google Wallet Users in the Process
October 25, 2014, 5:26 PM
1 Million Credit Card Activated on Apple Pay Within 72 Hours, Walmart CEO Hopes Visa "Suffers"
October 28, 2014, 8:17 AM
Microsoft's Figures Show Desktop Users Flocking to Windows 10 Preview
October 27, 2014, 11:04 AM
Latest Blog Posts
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
Space Terrorism is a Looming Threat For the United States
Apr 23, 2014, 7:47 PM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information