Secondhand smoke exposure is a known risk factor for lung cancer. Approximately 3,000 lung cancer deaths occur each year among adult non-smokers in the United States as a result of exposure to secondhand smoke. Secondhand smoke is also linked to nasal sinus cancer. Some research suggests an association between secondhand smoke and cancers of the cervix, breast, and bladder. However, more research is needed in order to confirm a link to these cancers.

Secondhand smoke is a combination of a smoker’s exhaled smoke and the smoke from a burning cigarette. It contains more than 4,000 substances, including 200 known poisons and 43 cancer-causing substances and kills an estimated 62,000 nonsmokers each year in the United States.

No immediate symptoms. Based on an updated Assessment of Risk for Radon in Homes, radon in indoor air is estimated to cause about 21,000 lung cancer deaths each year in the United States. Smokers are at higher risk of developing Radon-induced lung cancer. Lung cancer is the only health effect which has been definitively linked with radon exposure. Lung cancer would usually occur years (5-25) after exposure.

The above organizations are in addition to researchers in universities from around the world. The evidence that secondhand smoke is a health hazard is simply overwhelming. Every reputable major health organization and government agency agrees that secondhand smoke is dangerous to your health. In April 2004 the U.S. Centers for Disease Control and Prevention made history.

The evidence base that secondhand smoke harms health is substantial, and has been reviewed extensively, both in this country by the Government's independent Scientific Committee on Tobacco and Health, and overseas. The World Health Organisation's International Agency for Research on Cancer's report "Tobacco Smoke and Involuntary Smoking" published in 2004 reviewed the evidence of the health risks associated with smoking and secondhand smoke-that report is over 1,400 pages long.

Secondhand smoke has been classified by the US Environmental Protection Agency (EPA) as a known cause of lung cancer in humans (Group A carcinogen). It causes eye, nose and throat irritation; headaches; may contribute to heart disease; increased risk of lower respiratory tract infections such a bronchitis and pneumonia; increased severity and frequency of asthma episodes and decreased lung function.

More than 4,000 chemicals have been identified in mainstream tobacco smoke; however, the actual number may be more than 100,000. Of the chemicals identified in secondhand smoke, at least 60 are carcinogens (substances that cause cancer), such as formaldehyde. Six others are substances that interfere with normal cell development, such as nicotine and carbon monoxide. Following is a partial list of chemicals found in tobacco smoke:

Yes, the malnourishment and purging associated with Anorexia often cause other significant health problems. People with Anorexia are often diagnosed with anemia, cardiovascular (heart and blood circulation) problems such as hypotension (low blood pressure) and irregular heart beat (arrhythmia), tooth decay from repeated vomiting, poor kidney functioning, and osteoporosis (a decrease in the size and strength of bone).

There are three exposure routes for asbestos fibers: (1) inhalation via the respiratory system (2) ingestion via the mouth associated with asbestos fibers in drinking water and (3) skin contact. Asbestos has been known to cause a number of disabling and fatal diseases such as asbestosis, lung cancer, mesothelioma and pleural plaques. There is no safe level of exposure to asbestos; therefore, all exposure to asbestos should be avoided.

In order to be exposed to PAHs at the school, you must come into direct contact with the contaminated soil (for example, touching the soil, eating soil particles on hands or food, or breathing airborne soil particles). Several PAHs have been shown to cause cancer in laboratory animals and in people after long periods of exposure at high levels. Studies in animals have also shown that PAHs can cause harmful effects on skin, body fluids, and the immune system.

We are exposed to mould and mould spores throughout our day in our natural environment. This does not mean that if you find mould that you should not take basic precautions such as gloves and a mask, but the concern is greater for people with compromised or suppressed immune systems where exposure can lead to problems with allergic reactions or infection. The type and concentration of mould and the method of exposure will have an effect.

Secondhand smoke, also known as environmental tobacco smoke (ETS), has been declared by the U.S. Environmental Protection Agency as a "Class A carcinogen" - meaning that it is a major cause of cancer and other serious public health problems. The health of nonsmokers is adversely affected by secondhand smoke as seen in more than 3,000 cases of lung cancer and 40,000 heart attack deaths of nonsmokers each year who have been exposed regularly to ETS.

Secondhand smoke kills. The Government's independent Scientific Committee on Tobacco and Health concluded after reviewing the available medical and scientific evidence in 2004 that exposure to secondhand smoke contributes to a range of serious medical conditions, including: children exposed to secondhand smoke are at an increased risk for sudden infant death syndrome (SIDS), acute respiratory infections, ear problems and more severe asthma.

Molds can cause many health ailments. The most common symptom associated with exposure to elevated levels of fungal spores or mold is Allergies. Other symptoms are; asthma, edema, bronchiospasms, pulmonary emphysema, candida vaginitis, thrush, infections in the human skin, nails, eyes, nose, sinuses, tongue, throat, esophagus, and the entire digestive tract and fungal related ear infections. Molds can also be acutely toxic to the liver, brain, kidneys, lungs and heart.

The answer to this question is the subject of ongoing scientific and policy debate. We do know very high levels of dioxin in blood (hundreds to thousands of times higher than people normally experience) increase the likelihood of developing chloracne, a temporary skin condition which can be severe in some cases. Scientists convened by WHO reviewed the animal toxicity data on dioxin in a recent report (Food Additives Contam., 17: 223-240, 2000).