Breathe Clean Air Air and Breathing

Lung Diseases

Air Quality

Some Topics

  • Air Quality

    Air is a mixture of gases and aerosols. Humans add thousands of volatile gases to air, creating a chemical soup that changes light transmission through the atmosphere and exposes all living creatures to toxins and carcinogens. Suspended particles in the air (aerosol) are important to the behavior of whole atmosphere and play a key role in determining human disease.

    Over land up to a quarter of the total airborne particulates are pollens, fungal spores, bacteria, viruses, plant and animal matter. Air inside buildings contains local aerosols that are often more concentrated and more toxic than outdoor air. The term dust refers to the larger particles in the aerosol that settle on walls and furniture. A smoker in the living room of a house produces a toxic aerosol that permeates the rest of the house. Smoke particles settle on walls and every object in a room so that a smoker leaves a trail of contamination that non-smokers smell as soon as they enter the room.

    Indoor air contains a living aerosol of microorganisms that infect or trigger allergic reactions. Spores of bacteria and fungi are microscopic and may persist for months or years. You can see the indoor aerosol under the right lighting conditions, such a sunlight streaming through a window. The abundance of microorganisms, even in a very clean house, surprises most people who have tests done to assess air quality.

    Ozone: In the 20th century, it became obvious that gases created by human activity changed the chemical composition of the troposphere and stratosphere with negative impacts on human survival. Large ozone holes appeared over the Antarctic and the Arctic Polar regions. Smaller areas of ozone depletion were recorded over other, more-populated regions of the Earth. Increases in surface UV-B radiation have been recorded wherever stratospheric ozone was depleted. A scientific consensus was reached that human-produced chemicals were responsible for ozone depletion. Combinations of volatile chemicals containing chlorine, fluorine, bromine, carbon, and hydrogen were responsible; carbon tetrachloride, and methyl chloroform were used in refrigeration, air conditioning, and as solvents. Halons, which contain carbon, bromine, fluorine, and chlorine were also implicated. An international agreement was achieved so that many governments outlawed CFCs, halons, carbon tetrachloride, and methyl chloroform.

    Re Ozone See World Meteorological Organization/United Nations Environment Programme report, Scientific Assessment of Ozone Depletion: 1998 (WMO Global Ozone Research and Monitoring Project-Report No. 44, Geneva, 1999).

  • Discussions of Environmental Science and Human Ecology were developed by Environmed Research Inc. Sechelt, B.C. Canada. Online Topics were developed from two books,
    Air and Breathing
  • The Environment
  • Air and Breathing helps you understand breathing, respiratory diseases, air quality issues, airborne infections and other causes of breathing disorders. You will find detailed information about the respiratory tract, atmosphere, air pollution, airborne infection, air quality allergy, lung diseases and airborne hazards at home.
    2018 edition 106 pages.
    Air and Breathing Print Edition for Download.

    The Environment

    In the book, The Environment, you will find detailed information about the weather, climate change, soils, forests, energy sources, oceans, the atmosphere, air pollution, climate change, air quality and the politics of the environment. The Environment is available as a Printed book or as an eBook Edition for download.

    Download The Environment as an eBook

    The Author Stephen J. Gislason MD

    Food Causes

    Not all respiratory diseases are caused by airborne pathogens. If asthma, bronchitis and/or nose sinus congestion is chronic or attacks occur frequently in all seasons and are not related to airborne exposure, then consider delayed pattern food allergy as the cause and do diet revision using the Alpha Nutrition Program.

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    Alpha Nutrition Program
    Aching and Fatigue
    Air and Breathing
    Alpha Nutrition Cooking
    Alcohol Problems
    Gluten Problems
    Managing Diabetes 2
    Eating and Weight
    Skin Disease
    Feeding Children
    Human Brain
    Food Allergy
    Digestive Disorders
    Food Choices
    Heart & Arterial Disease
    Immunology Notes
    Inflammatory Arthritis
    Nutrition Notes

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