Hygiene Hypothesis News and Research

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The hygiene hypothesis is also sometimes referred to as the biome depletion theory, or the “old friends” theory, is a hypothesis that states that the cause of allergic disease may be immune intolerance resulting from inadequate exposure to parasites and microbes in childhood.

C-section babies more likely to develop allergies

For expectant moms who may contemplate the pros and cons of natural child birth or Caesarian section, a Henry Ford Hospital study suggests that C-section babies are susceptible to developing allergies by age two.

25 Feb 2013

Early life exposure to gut microbes protects against autoimmune disease

Early life exposure to normal bacteria of the GI tract (gut microbes) protects against autoimmune disease in mice, according to research published on-line in the January 17 edition of Science. The study may also have uncovered reasons why females are at greater risk of autoimmune diseases such as multiple sclerosis, rheumatoid arthritis, and lupus compared to males.

18 Jan 2013

Triclosan exposure linked to allergies in children

Norwegian children with high levels of urinary triclosan are more likely to have allergies than children with lower levels, report researchers in Allergy.

15 Nov 2012

Triclosan can contribute to increased risk of allergies in children

Triclosan - an antibacterial chemical found in toothpaste and other products - can contribute to an increased risk of allergy development in children. This comes from the Norwegian Environment and Childhood Asthma Study, in which the Norwegian Institute of Public Health is involved. Similar results are reported in the USA.

15 Nov 2012

Overcleanliness in childhood may increase risk for peanut allergy

An increased incidence of peanut allergy in children from more wealthy families supports the “hygiene hypothesis” that overcleanliness may promote the onset of childhood allergies, say US researchers.

9 Nov 2012

High family income, hygiene habits can increase risk of peanut allergies in children

Peanut allergies are rising among American children and one reason might be due to economic status. According to a new study presented at the American College of Allergy, Asthma and Immunology (ACAAI) Annual Scientific Meeting, greater rates of peanut allergy are found in families with higher economic status. This supports the "hygiene hypothesis" of many allergists.

9 Nov 2012

Allergies and hygiene: an interview with Sally Bloomfield

Allergies occur when the body overreacts to substances in our environment, such as pollen, dust mites and so forth. What happens is that when we are exposed to these potential threats, the immune system should react, deal with it, and then shut down.

26 Oct 2012

‘Hygiene hypothesis’ updated to ‘Old Friends’ hypothesis

A new scientific report out today from the International Scientific Forum on Home Hygiene (IFH) dismantles the myth that the epidemic rise in allergies in recent years has happened because we’re living in sterile homes and overdoing hygiene.

3 Oct 2012

First study to demonstrate that microbes are specific to their host species

Gut bacteria's key role in immunity is tuned to the host species, researchers have found, suggesting that the superabundant microbes lining our digestive tract evolved with us-a tantalizing clue in the mysterious recent spike in human autoimmune disorders.

23 Jun 2012

Antimicrobial exposure may increase risk of allergies in children

Exposure to common antibacterial chemicals and preservatives found in soap, toothpaste, mouthwash and other personal-care products may make children more prone to a wide range of food and environmental allergies, according to new research from Johns Hopkins Children's Center.

20 Jun 2012

Allergy risk in children linked to antibacterials in personal-care products

Exposure to common antibacterial chemicals found in soap, toothpaste, mouthwash and other personal-care products may make children more prone to a wide range of food and environmental allergies, according to new research from Johns Hopkins Children’s Center.

19 Jun 2012

New research shows beneficial side effect of anti-allergy parasite

New research is showing a beneficial side effect of parasites for our health. Hygiene Hypothesis: As rates of allergy are reported to have tripled in the UK in the past decade, the scientific finger is pointing to an over-sanitised lifestyle making our immune responses overactive. Now, a team of biologists at the University of Edinburgh, led by Professor Rick Maizels, are investigating how parasitic worms could offer a cure for modern illnesses.

1 Mar 2012

High gut flora protects children against allergies

High diversity and a variety of bacteria in the gut protect children against allergies as opposed to some individual bacterial genera. These are the findings of a comprehensive study of intestinal microflora (gut flora) in allergic and healthy children, which was conducted at Linköping University in Sweden.

9 Dec 2011

Latest research from world's leading allergists to be presented at ACAAI 2011 meeting

Be among the first to hear the latest research from the world's leading allergists presented at the 2011 annual scientific meeting of the American College of Allergy, Asthma and Immunology (ACAAI), Nov. 3-8, in Boston.

29 Sep 2011

Study finds key influential factors linked with risk of allergies in babies

Prenatal pet exposure, a mother's delivery mode and race are influential factors in a child's risk of developing allergies by age 2, according to a Henry Ford Hospital study.

9 Aug 2011

Early infection with H. pylori protects against allergy-induced asthma

Infection with the gastric bacterium Helicobacter pylori provides reliable protection against allergy-induced asthma, immunologists from the University of Zurich have demonstrated in an animal model together with allergy specialists from the University Medical Center of the Johannes Gutenberg University Mainz.

2 Jul 2011

AJG publishes new review on Inflammatory Bowel Disease management

The American College of Gastroenterology published a new evidence-based systematic review on the management of Inflammatory Bowel Disease as a supplement to The American Journal of Gastroenterology for April 2011, a special issue entirely dedicated to IBD.

8 Apr 2011

Exposure to infections in early childhood can protect child from eczema later in life: Study

Exposure to worm infections in the womb may protect a newborn infant from developing eczema, a study funded by the Wellcome Trust suggests. A large trial in Uganda showed that treating a pregnant woman for worm infections increased her child's chances of developing the allergic skin disease.

29 Jan 2011

Research finds link between increased hygiene and higher rates of certain diseases in women

Little girls growing up in western society are expected to be neat and tidy - "all ribbon and curls" - and one researcher who studies science and gender differences thinks that emphasis may contribute to higher rates of certain diseases in adult women.

27 Jan 2011

Exciting progress made in MS research during 2010

Exciting advances were made in 2010 in virtually every field of MS research. Progress toward finding new therapies for MS is illustrated by the availability of the first oral disease-modifying therapy for MS. Progress was also made toward finding ways to restore function and improving quality of life and specific MS symptoms through exercise, meditation, rehabilitation and medications, including the first therapy specifically approved to treat a symptom of MS (Ampyra).

20 Dec 2010