Passive Smoking- Mostafa Mahmoud

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Passive Smoking- Mostafa Mahmoud
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Passive Smoking
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Whats Passive Smoking?
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Definition

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

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What is in the smoke?
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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.

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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 HbO2 and 50 HbCO.

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Other substances in the smoke

• Benzene
• Ammonia
• Acetone
• Cadmium
• Hydrogen cyanide
• Ethanol
• Methanol

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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.

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Exposure toPassive Smoke
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Definition

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

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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.

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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.

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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.

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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 311 years are
  exposed to secondhand smoke
• 25 of children aged 311 years live with at
  least one smoker.

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But Does SHS Actually Cause Diseases?

• Yes. And it can also kill you.

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Current estimates of risk from passive smoking
are the equivalent of actively smoking one
cigarette per day
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Effect of exposure toSMOKE
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Effect of passive smoke
Long-Term
Short-Term
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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.

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Long-Term Effect

1. Ischemic Heart Diseases.
2. Lung Cancer
3. Urinary bladder cancer.
4. Middle Ear Diseases.

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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

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Effect on Children
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Effect on children

• Secondhand smoke exposure is responsible for
  150,000300,000 new cases of bronchitis and
  pneumonia in children aged less than 18 months
  annually.
• Between 200,000 and 1,000,000 kids with asthma
  have their condition worsened by secondhand smoke
  every year.

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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.

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Presented to you by

• Mostafa Mahmoud Ahmed