Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Human immune system has not adapted to changes in the environment

26.01.2007
Increase in allergies due to the disappearance of protective factors

It seems that the current “allergy epidemic” is due not so much to an increase in allergenic risk factors as to the disappearance of factors protecting people against allergies. The human immune system has not had the time to adapt to the rapid changes in the urban environment and way of life.

These are the conclusions of Professor Tari Haahtela and his research team, who have been studying allergies in Finnish and Russian Karelia. Their project is part of the Academy’s Microbes and Man Research Programme, the evaluation of which has just been completed.

The research was concerned with the prevalence of allergic diseases in Finnish and Russian Karelia as well as risk factors in schoolchildren and their mothers. The prevalence of atopic allergy was determined by skin prick tests and by measuring serum antibodies. Other data were collected by questionnaires.

... more about:
»Allergic »Karelia »Russia »prevalence

In Finland, the risk of allergic predisposition in children is four times and in mothers 2.4 times greater than in Russia. There are also marked country differences in the prevalence of allergic diseases (asthma, allergic rhinitis and atopic eczema). Both in children and mothers their prevalence was significantly higher in Finland than in Russia. In an examination of generational differences it was found that children in Finland had more allergies than mothers, whereas in Russia the opposite was true. This suggests that the “allergy epidemic” in Finland is still ongoing, whereas in Russian Karelia it has hardly started.

Parental allergic disease was identified as a risk factor for allergies in children in both regions. Protective factors included farming as the family’s main source of livelihood as well as having pets, especially in early childhood. In part these results lend support to earlier observations, in part they contradict them. An environment rich in microbes seems to generate widespread tolerance against various environmental allergens. In Russian Karelia, atopic allergy, an indirect indicator of westernization, has not increased during the past few generations.

Niko Rinta | alfa
Further information:
http://www.aka.fi

Further reports about: Allergic Karelia Russia prevalence

More articles from Life Sciences:

nachricht Study shines light on brain cells that coordinate movement
26.06.2017 | University of Washington Health Sciences/UW Medicine

nachricht New insight into a central biological dogma on ion transport
26.06.2017 | Aarhus University

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Can we see monkeys from space? Emerging technologies to map biodiversity

An international team of scientists has proposed a new multi-disciplinary approach in which an array of new technologies will allow us to map biodiversity and the risks that wildlife is facing at the scale of whole landscapes. The findings are published in Nature Ecology and Evolution. This international research is led by the Kunming Institute of Zoology from China, University of East Anglia, University of Leicester and the Leibniz Institute for Zoo and Wildlife Research.

Using a combination of satellite and ground data, the team proposes that it is now possible to map biodiversity with an accuracy that has not been previously...

Im Focus: Climate satellite: Tracking methane with robust laser technology

Heatwaves in the Arctic, longer periods of vegetation in Europe, severe floods in West Africa – starting in 2021, scientists want to explore the emissions of the greenhouse gas methane with the German-French satellite MERLIN. This is made possible by a new robust laser system of the Fraunhofer Institute for Laser Technology ILT in Aachen, which achieves unprecedented measurement accuracy.

Methane is primarily the result of the decomposition of organic matter. The gas has a 25 times greater warming potential than carbon dioxide, but is not as...

Im Focus: How protons move through a fuel cell

Hydrogen is regarded as the energy source of the future: It is produced with solar power and can be used to generate heat and electricity in fuel cells. Empa researchers have now succeeded in decoding the movement of hydrogen ions in crystals – a key step towards more efficient energy conversion in the hydrogen industry of tomorrow.

As charge carriers, electrons and ions play the leading role in electrochemical energy storage devices and converters such as batteries and fuel cells. Proton...

Im Focus: A unique data centre for cosmological simulations

Scientists from the Excellence Cluster Universe at the Ludwig-Maximilians-Universität Munich have establised "Cosmowebportal", a unique data centre for cosmological simulations located at the Leibniz Supercomputing Centre (LRZ) of the Bavarian Academy of Sciences. The complete results of a series of large hydrodynamical cosmological simulations are available, with data volumes typically exceeding several hundred terabytes. Scientists worldwide can interactively explore these complex simulations via a web interface and directly access the results.

With current telescopes, scientists can observe our Universe’s galaxies and galaxy clusters and their distribution along an invisible cosmic web. From the...

Im Focus: Scientists develop molecular thermometer for contactless measurement using infrared light

Temperature measurements possible even on the smallest scale / Molecular ruby for use in material sciences, biology, and medicine

Chemists at Johannes Gutenberg University Mainz (JGU) in cooperation with researchers of the German Federal Institute for Materials Research and Testing (BAM)...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Plants are networkers

19.06.2017 | Event News

Digital Survival Training for Executives

13.06.2017 | Event News

Global Learning Council Summit 2017

13.06.2017 | Event News

 
Latest News

Study shines light on brain cells that coordinate movement

26.06.2017 | Life Sciences

Smooth propagation of spin waves using gold

26.06.2017 | Physics and Astronomy

Switchable DNA mini-machines store information

26.06.2017 | Information Technology

VideoLinks
B2B-VideoLinks
More VideoLinks >>>