Americans are better educated regarding the very real and proven, documented results of second hand smoke. You state "Prior to 1980 *I believe* that 60%+ of Americans smoked" then you go on to HYPOTHOSIZE "Let's say that 40% of Americans breathed second hand smoke, etc." In other words, you created these figures/statsistics and yet you impugn the actual scientific studies with regard to this very serious matter? You imply some sort of mental deficiency regarding Americans also, perhaps it is this aspect that is your very real agenda and not the second hand smoke?
Please read my SCIENTIFIC PROOF BELOW:
http://quitsmoking.about.com/od/secondhandsmoke/The_Dangers_of_Second_Hand_Smoke.htm
secondhand smoke may play a role in causing or contributing to a number of health problems, from cardiovascular disease to cancer.
But secondhand smoke is often avoidable. Take steps to safeguard yourself and your loved ones from secondhand smoke.
Toxins in secondhand smoke
What exactly is secondhand smoke? It's two different forms of smoke from cigarettes, pipes or cigars:
Sidestream smoke. This is smoke that wafts from the burning tobacco product.
Mainstream smoke. This is smoke that the smoker exhales.
Secondhand smoke is also known as environmental tobacco smoke, passive smoking, involuntary smoking and a newer, more descriptive term, tobacco smoke pollution.
Regardless of what you call it, both types of secondhand smoke contain harmful chemicals — and a lot of them. Specifically which chemicals are present depend on the type of tobacco product, how it's smoked and the paper in which the tobacco is wrapped. More than 4,000 chemicals make up the haze of secondhand smoke. And more than 60 of the chemicals in cigarette smoke are known to be carcinogenic, which means they may cause cancer.
Some of the substances found in secondhand smoke that are known or suspected to cause cancer include:
Formaldehyde
Arsenic
Cadmium
Benzene
Ethylene oxide
http://www.mayoclinic.com/health/secondhand-smoke/CC00023
secondhand smoke may play a role in causing or contributing to a number of health problems, from cardiovascular disease to cancer.
But secondhand smoke is often avoidable. Take steps to safeguard yourself and your loved ones from secondhand smoke.
Toxins in secondhand smoke
What exactly is secondhand smoke? It's two different forms of smoke from cigarettes, pipes or cigars:
Sidestream smoke. This is smoke that wafts from the burning tobacco product.
Mainstream smoke. This is smoke that the smoker exhales.
Secondhand smoke is also known as environmental tobacco smoke, passive smoking, involuntary smoking and a newer, more descriptive term, tobacco smoke pollution.
Regardless of what you call it, both types of secondhand smoke contain harmful chemicals — and a lot of them. Specifically which chemicals are present depend on the type of tobacco product, how it's smoked and the paper in which the tobacco is wrapped. More than 4,000 chemicals make up the haze of secondhand smoke. And more than 60 of the chemicals in cigarette smoke are known to be carcinogenic, which means they may cause cancer.
Some of the substances found in secondhand smoke that are known or suspected to cause cancer include:
Formaldehyde
Arsenic
Cadmium
Benzene
Ethylene oxide
Here are a few other chemicals in secondhand smoke that might sound familiar, along with their effects on health:
Ammonia — irritates your lungs
Carbon monoxide — hampers breathing by reducing oxygen in your blood
Methanol — toxic when inhaled or swallowed
Hydrogen cyanide — interferes with proper respiratory function
The dangerous particles given off in secondhand smoke can linger in the air for hours. Even breathing them in for a short time — as little as 20 or 30 minutes — can harm your health in a variety ways. And breathing in secondhand smoke over years can be all the more dangerous.
Adult health threats from secondhand smoke
Health experts have recognized the relationship between secondhand smoke and health risks for decades. Research exploring these connections is ongoing.
Some of the known or suspected health risks include:
Cancer
In 1993, the Environmental Protection Agency placed environmental tobacco smoke in the most dangerous category of cancer-causing agents, and subsequent research has upheld that status.
Secondhand smoke is a known risk factor for lung cancer. Experts believe that secondhand smoke is to blame for roughly 3,000 deaths from lung cancer in adult nonsmokers each year in the United States. Secondhand smoke is also linked to cancer of the nasal sinuses. It's also been linked to cancers of the cervix, breast and bladder, but the evidence hasn't been as compelling as the link to lung cancer.
Heart disease
Secondhand smoke harms the cardiovascular system of nonsmokers in many ways. For one thing, it causes coronary heart disease, such as a heart attack. It also damages blood vessels, interferes with circulation and increases the risk of blood clots. It's estimated that some 35,000 nonsmokers die of smoking-related heart disease in the United States every year.
Lung disease
Chronic lung ailments, such as bronchitis and asthma, have been associated with secondhand smoke. Exposure to secondhand smoke is also associated with chest tightness at night and feelings of breathlessness after physical activity.
The Dangers of Secondhand Smoke:
Secondhand smoke causes about 3,000 deaths each year from lung cancer in non-smokers.3
Secondhand smoke causes irritation of the eyes, nose, and throat.4
Secondhand smoke can also irritate the lungs, leading to coughing, excessive phlegm and chest discomfort.5
Secondhand smoke has been estimated to cause 22,700-69,600 deaths per year from heart disease in adult nonsmokers.6
Secondhand Smoke Especially Hurts Children!
Children who breathe secondhand smoke are more likely to suffer from pneumonia, bronchitis, and other lung diseases.7
Children who breathe secondhand smoke have more ear infections.8
Children who breathe secondhand smoke are more likely to develop asthma.9
Children who have asthma and who breathe secondhand smoke have more asthma attacks.10
There are an estimated 150,000 to 300,000 cases every year of infections, such as bronchitis and pneumonia in infants and children under 18 months of age who breathe secondhand smoke. These result in between 7,500 and 15,000 hospitalizations!11
http://www.lungusa.org/site/pp.asp?c=dvLUK9O0E&b=39858
NOW DO YOU GET IT? ANY QUESTIONS?