Passive Smoking Mostafa Mahmoud Passive Smoking Whats Passive

Passive Smoking- Mostafa Mahmoud

Passive Smoking

What’s Passive Smoking?

Definition • Passive smoking is the involuntary inhalation by a nonsmoker of a combination of diluted sidestream smoke and mainstream smoke. sidestream • It occurs when tobacco smoke permeates any environment, causing inhalation by all people within that environment. mainstream

What is in the smoke?

Substances in the smoke • Tobacco smoke contains over 4000 chemicals in the form of particles and gases. • Of the 4, 000 chemicals identified in SHS, 69 are carcinogens, including benzene, cadmium, formaldehyde and toluene.

Three main substances are found in the smoke 1 -Nicotine – a powerful addictive drug. it stimulates the central nervous system. Nicotine is also an insecticide. 2 -Tar - a complex of mixture of chemicals many of which are know to cause cancer. 3 -Carbon monoxide - a gas that take the place of the oxygen in the blood and addition of 0. 1% of CO to the air result in 50% Hb. O 2 and 50% Hb. CO.

Other substances in the smoke • Benzene • Ammonia • Acetone • Cadmium • Hydrogen cyanide • Ethanol • Methanol

Substances in the smoke The Environmental Protection Agency (EPA) in the USA has classified environmental tobacco smoke as a class “A” carcinogen, ranking it alongside asbestos and arsenic.

Exposure to Passive Smoke

Definition • Passive smoking is the involuntary inhalation by a nonsmoker of a combination of diluted sidestream smoke and mainstream smoke. sidestream • It occurs when tobacco smoke permeates any environment, causing inhalation by all people within that environment. mainstream

Is it avoidable ? • Smoke clings to everything; clothes, furniture, toys and gives off toxins for some time. • Nobody really knows how long the smoke stay in household objects.

What About ventilation? • ventilation systems cannot remove secondhand smoke from indoor environments. • Studies have shown that in order to reduce the toxins in SHS to harmless levels, one would need air exchange rates equivalent to tornado-force winds.

Is there a safe level of exposure? • There is no evidence that there is a threshold below which second-hand smoke is considered harmless • Some of the chemicals found in cigarette smoke, such as 4 -aminobiphenal, have been proven unsafe to humans at even the smallest level of exposure.

Exposure to passive smoking • In the U. S. , 26% of the adult population are smokers, consuming more than 500 billion cigarettes annually, exposing 126 million nonsmoking Americans to secondhand smoke • Almost 60% of U. S. children aged 3– 11 years are exposed to secondhand smoke • 25% of children aged 3– 11 years live with at least one smoker.

But Does SHS Actually Cause Diseases? ØYes. And it can also kill you.

Current estimates of risk from passive smoking are the equivalent of actively smoking one cigarette per day

Effect of exposure to SMOKE

Effect of passive smoke Short-Term Long-Term

Short-Term Effect • Just 30 minutes exposure is enough to reduce coronary blood flow. • eye irritation, headache, cough, sore throat, dizziness and nausea. • Adults with asthma can experience a significant decline in lung function when exposed.

Long-Term Effect 1. 2. 3. 4. Ischemic Heart Diseases. Lung Cancer Urinary bladder cancer. Middle Ear Diseases.

Believe IT or not !!!!!! “ An hour in a room with a smoker is nearly hundred times more likely to cause lung cancer in a non smoker than 20 years spent in a building containing asbestos” Sir / Richard Doll , 1985

Effect on Children

Effect on children 1. Secondhand smoke exposure is responsible for 150, 000– 300, 000 new cases of bronchitis and pneumonia in children aged less than 18 months annually. 2. Between 200, 000 and 1, 000 kids with asthma have their condition worsened by secondhand smoke every year.

Effect on children (Cont. ) 3. In France passive smoking has been estimated to cause between 3, 000 and 5, 000 deaths per year. Prime minister Dominique de Villepin said during his announcement of a nationwide smoking ban: "That makes more than 13 deaths a day. It is an unacceptable reality in our country in terms of public health. ”

Presented to you by Mostafa Mahmoud Ahmed