Transcript Chapter 24 lesson 2

Chapter 24 lesson 2
WHAT TOBACCO DOES TO THE BODY
Effects of Smoking on The Body
• Cigarettes impair the health of the smoker
in two ways
– 1. Short term – immediate effects
– 2. Long term-effects as smoking continues
• Over time tar and pollutants in tobacco takes its toll
on several body systems
• Some of most deadly problems involve the
respiratory and circulatory systems
Diseases of the Respiratory
System
• 2 principal diseases that make up chronic
obstructive pulmonary disease
– Bronchitis
– Emphysema
Diseases of the Respiratory
System
• Bronchitis – Bronchi are irritated; as cilia
become useless tar builds up resulting in
chronic coughing and excessive mucus
secretion
Diseases of the Respiratory
System
• Emphysema – a condition that involves
the destruction of the tiny air sacs in the
lungs that oxygen is absorbed into the
body
– Sacs are destroyed and loses elasticity and
provides less total surface or oxygen to be
absorbed
– More breaths are required – instead of 5% of
energy to breath, people use 80%
Diseases of the Respiratory
System
• Lung Cancer – Directly linked to smoking
– Leading cause of cancer deaths among males
– Becoming more significant in women
When cilia are destroyed and excess mucus cannot be
expelled, cough develops
In these conditions cancer cells can grow and spread to
other organs
Diseases of the Circulatory System
• Nicotine makes the heart work harder and
speeds up the pulse
• Constricts blood vessels which cuts down on the
circulation to the limbs
• Can result in tingling feeling hands and feet
• Nicotine contributes to plaque build up in the
blood vessels
• The formation of these fatty deposits leads to
arteriolosclerosis
Diseases of the Circulatory System
• This increase the risk of heart attacks
• RISK OF SUDDEN DEATH FROM HEART
ATTACK IS 3 TIMES GREATER FOR
SMOKERS
• Smoking increases chance of stroke due
to higher blood pressure
• If people stopped smoking deaths from
heart disease could be cut by 1/3
Dangers of Smokeless Tobacco
• Nicotine in Smokeless tobacco is just as
addictive as in cigarettes
• Secrete more saliva
• Some is swallowed causing problems in
the stomach and digestive system
• Juices contain chemicals that may delay
healing of wounds
Dangers of Smokeless Tobacco
• Causes Leukoplakia – Thickened, white,
leathery – appearing spots on the inside of
a user’s mouth that can develop cancer
• Oral cancer strikes 30,000 Americans a
year
• Because it is often discovered late, 50% of
victims only survive longer than 5 years
DID YOU KNOW
SEE PAGE 535 in BOOK
Effects of Smoke on Non-Smoker
• People who breath passive smoke receive
the same unhealthy effects as a smoker
Effects of Smoke on Non-Smoker
2nd HAND SMOKE
Passive Smoke – Smoke inhaled by nonsmokers as well as the smoke that
remains in a closed environment after the
smoker is through smoking
Stream Smoke – Smoke that smoker blows
off
Sidestream Smoke – Smoke that comes
from burning tobacco
Smoking During and After
Pregnancy
• Parents who smoke contribute to deaths of
at least 6,200 children each year
• 2,800 deaths of low-birth weight babies
are caused by mothers who smoked while
pregnant
• 1,100 caused respiratory infections
• Causes small fetal growth
Smoking During and After
Pregnancy
•
•
•
•
Increased chance of miscarriage
Increased chance of still birth
Growth and development problems
May adversely affect intellectual
development
Smoking During and After
Pregnancy
• Nicotine Passes through the placenta
constricting the blood vessels to the fetus
• Carbon Monoxide reduces the oxygen
levels in the mothers and fetus’s blood
• Nicotine can also be passed through
breast feeding
Rights of The Non-Smoker
• 50% of all smokers light up without asking
non-smokers if they mind
• 80% non- smokers are bothered but only
4% ask smoker to stop
• You have the right to ask smoker to stop
• Many public places have non-smoking
sections or non smoking at all