rewards of smoking cessation by dr. ashraf el-adawy by dr. ashraf el-adawy consultant chest physcian...
TRANSCRIPT
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Rewards of Smoking Cessation
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By
Dr . Ashraf El-Adawy
Consultant Chest Physcian
TB TEAM Expert - WHO
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In the past century smoking was common as a symbol of simple pleasures
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Times have changed
Smoking is less socially acceptable now than ever...
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Growing Recognition of Value of Smoking Cessation
Smoking’s bad for your health, but exactly how does quitting make life better?
The American Heart Association
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• Smoking cessation intervention is one of the most cost-effective interventions in medicine
• Compared with other preventive interventions, smoking cessation is extremely cost-effective.
• Smoking cessation has been called the 'gold standard' of health care cost effectiveness, producing additional years of life at costs that are well below those estimated for a wide range of healthcare interventions.
World Health Organization 2003
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Smoking and Life span
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On average, each cigarette shortens a smoker's life by around 11 minutes
BMJ. 2000 January
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Finally, here’s a nice example of what stopping smoking can offer.Richard Doll (1912-2005), who stopped smoking cigarettes at age 37,
photographed aged 91 at the 2004 BMJ press conferenceon the 50-year results from his study of British doctorsMichael Crabtree, copyright Troika
Photos
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Study of smoking and death in male British doctors
• Recorded all deaths for 50 years (1951-2001)
• Main findings (for men born in the 20th century)– Smokers lose, on average, 10 years of healthy life
• Asked all UK doctors in 1951, and periodically thereafter, what they themselves smoked
– Stopping smoking at any age will add years to a persons life
– Those who stop smoking before 35 years of age avoid almost all of the excess risk will have a life expectancy no different from that of a nonsmoker.
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Ag
e 40
A Study of Male Physicians Showed Quitting at Any Age Increases Life Expectancy
35-44 years
Patients were studied over the period of 1951-2001.Adapted from Doll R et al. BMJ. 2004;328:1519-1527.
Years
Nonsmokers Cigarette Smokers
Stopped Age
% S
urv
ival
Fro
m M
ean
Qui
t at a
ge 3
5-44
Additional9-yearlife expectancy
13
N=34,439 British male physicians.
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A Study of Male Physicians Showed Quitting at Any Age Increases Life Expectancy
Patients were studied over the period of 1951-2001.Adapted from Doll R et al. BMJ. 2004;328:1519-1527.
Years
% S
urvi
val F
rom
Mea
nAg
e 50
Qui
t at a
ge 4
5-54
Additional6-yearlife expectancy
45-54 years
14
Nonsmokers Cigarette Smokers
Stopped Age
N=34,439 British male physicians.
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A Study of Male Physicians Showed Quitting at Any Age Increases Life Expectancy
Patients were studied over the period of 1951-2001.Adapted from Doll R et al. BMJ. 2004;328:1519-1527.
Years
% S
urvi
val F
rom
Mea
nAg
e 60
Qui
t at a
ge 5
5-64
Additional3-yearlife expectancy
55-64 years
15
Nonsmokers Cigarette Smokers
Stopped Age
N=34,439 British male physicians.
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Tobacco is the single largest preventable cause of cancer in the world today
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Nonsmokers 1-14 cigs 15-24 25 +
Smoking habit
0.0
4.0
8.0
12.0
16.0
20.0
Rate
per
100
0 pe
rson
yea
rs
CPS2
0.00.6 0.6
1.1
45-54
0.1
1.72.7
3.9
55-64
0.3
4.5
7.1
9.265-74
0.6
7.0
13.2
17.9
75-84
Lung cancer risk by age and smoking habit
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40 50 60 70 80Age
0
500
1000
1500
Lung
can
cer d
eath
s pe
r 100
,000
Currentsmokers
Neversmokers
quit 30-39
quit 40-49
quit 50-54
quit 55-59
quit 60-64
Halpern JNCI 1993: CPS2 data
Lung cancer risk by age of quitting
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Stopping smoking: avoiding lung cancer
% dead fromlung cancer
Continued smoking: 16% dead from lung cancer
Stopped age 50: 6%
Stopped age 30: 2%
Never smoked: <1%
15
10
5
0
45 55 65 75Age
Cumulative risk at UK male 1990 ratesBMJ 2000; 321: 323-9
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The benefits of quitting
Action on Smoking and Health (ASH) Factsheet Number 11: Stopping Smoking. http://www.ash.org.uk
5 yearsThe risk of cancer of the mouth, throat, esophagus, and bladder are reduced by half Cervical cancer risk falls to that of a non-smoker.
10 years The risk of lung cancer halved
Within years .......
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• people diagnosed with cancer should quit smoking. For those having surgery, chemotherapy, quitting smoking helps improve the body’s ability to heal and respond to therapy . It also lowers the risk of pneumonia and respiratory failure .
• For people who have already developed cancer, quitting smoking reduces the risk of the cancer returning or developing a second cancer .
The National Cancer Institute
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Smoking Cessation & Cardiovascular Diseases
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One out of every five smoking-related deaths are caused by cardiovascular disease.
Cigarette smokers are two to four times more likely to develop coronary heart disease than non-smokers.
Cigarette smoking doubles a person's risk of stroke.
Cigarette smokers are more than ten times as likely as non-smokers to develop peripheral vascular disease
The American Heart Association
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The benefits of quitting
Action on Smoking and Health (ASH) Factsheet Number 11: Stopping Smoking. http://www.ash.org.uk
5 years The excess risk of a Stroke risk is reduced to that of a nonsmoker
Within years .......
15 years The risk of coronary heart disease is that of a nonsmoker's
1 yearThe excess risk of a heart attack reduces by half
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The American Heart Association
For those smokers with diagnosed CHD, stopping smoking appears to reduce the risk of recurrent infarction and cardiovascular death by 50% or more. Smoking cessation is crucial in the management of many contributors to heart attack e.g atherosclerosis.
Smoking cessation significantly lowers the risk of atherosclerosis
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Insulin action
Smoking
Oxdative stress
Diabetes mellitus
Bridges AB. et al., 1993 Paolisso G, et el., 1993
Smoking and Diabetes
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The American Heart Association
Smoking is a risk factor of type-2 diabetes mellitus not only among middle-aged but also among elderly men and women.
Current smokers were 2-3 times more likely than never smokers to develop Type 2 diabetes
It appears to be a modifiable risk factor: the risk of developing diabetes among former smokers was similar to that of never smokers
Smoking and Diabetes
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The American Heart Association
Type 2 diabetes is a major risk factor for coronary heart disease and stroke. Having diabetes makes you twice as likely as someone who does not to develop cardiovascular disease. Diabetics who smoke have triple the risk of death from heart disease than non-smokers.
Smoking and Diabetes
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The American Heart Association
Although Smoking increases the cardiovascular risk, at any level of blood pressure, for coronary heart disease, stroke , it is not associated with an increase in the development of hypertension
Drug treatment of hypertension is less effective in smokers Smoking should be avoided in any hypertensive patient
Smoking and hypertension
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The American Heart Association
Increases LDL
Decreases HDL
Slightly increases triglycerides
More LDL in plasma leads to more modified LDL
Smoking and hypercholestorlemia
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The American Heart Association
Smoking has a multiplicative interaction with the major risk factors for coronary artery disease (CAD), to increase disease risk.
For example, if the presence of smoking alone doubles the level of risk for CAD, the presence of another major risk factor in conjunction with smoking results in approximately a 4-fold increase in risk, and the presence of 2 other risk factors together with smoking results in approximately an 8-fold increase in risk.
Multiplicative Risk Factor CAD
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2.4
2.5
2.6
2.7
2.8
2.9
Post
bron
chod
ilato
r FEV
1
Sustained quitters
depqumch.tc
Continuing smokers
Screen 1 2 3 4 5Years of follow-upJAMA 1994;272(19):1497-505
CHANGE IN FEV1 BY SMOKING STATUS
The Lung Health Study
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Smoking Is the Single Most Important Risk Factor for COPD
Global Strategy for the Diagnosis, Management, and Prevention of Chronic Obstructive Pulmonary Disease, Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2008. Available from: http://www.goldcopd.org.
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1990 2020Ischaemic heart diseaseCerebrovascular diseaseLower resp infectionDiarrhoeal diseasePerinatal disordersCOPDTuberculosisMeaslesRoad Traffic AccidentsLung Cancer
Stomach CancerHIVSuicide
6th
3rd
Future Mortality Worldwide
Source: Murray & Lopez. Lancet 1997
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Am. J. Respir. Crit. Care Med. 2002; 166: 675-679
Years
FEV 1 (
L)
2.02.1
2.22.32.4
2.52.62.7
2.82.9
0 1 2 3 4 5 6 7 8 9 10 11
Continuous smokers
Disease Progression in COPDLung Function
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Smoking cessation decreases mortality in patients with COPD
1.00
0.95
0.90
0.85
0.80
Prop
ortio
n of
pati
ents
w
ith n
o ev
ent
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Time since LHS baseline (years)
Special intervention groupUsual care group
All-cause 14.5 year survival from the Lung Health Study (LHS)
Anthonisen NR, et al. Ann Intern Med. 2005; 142:233-239. Permission granted.
N=5887
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potential effect of stopping smoking early or late
in the course of COPD.
Fletcher CM, Peto R. BMJ. 1977;1:1645-1648. Reproduced with permissions from BMJ Publishing Group.
Smoked regularly and
susceptible to effects of smoke
Never smoked or not susceptible to smoke
Stopped smoking at 45 (mild COPD)
Stopped smoking at 65 (severe COPD)
Disability
Death
FEV 1 (%
of v
alue
at a
ge 2
5)
25
50
75
100
0
Age (years)25 50 75
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• Smoking Cessation is Single most effective and cost effective intervention to reduce the risk of developing COPD and stop its progression
Am J Respir Crit Care Med 2001CRJ . 10;(Suppl A). 2003
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Corticosteroid resistance
Laboratory Investigation advance online publication 24 July 2006; doi:10.1038/labinvest.3700456
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Cigarette smoking in asthma is a risk factor for poor asthma control
Emergency department visits as a result of exacerbations of asthma occur more frequently amongst heavy cigarette smokers with asthma
Every effort should be made to encourage individuals with asthma who smoke to quit.
ERS 2004
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Smoking Modulates Outcomes of Glucocorticoid Therapy in Asthma
(SMOG)
• Randomized, double-dummy, crossover trial of treatment with an ICS or an LTRA.
• primary outcome: change in pre-bronchodilator FEV1 • Non-smokers
– increases in FEV1 (170ml)– FEV1% predicted (5%) – PEF (28 L/m) – PC20 (0.63)
• smokers no such effects (except for daily AM PEF) Wechsler (ACRN) ATS 2006 (under review)
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Cigarette smoking increases the clearance of theophylline by 60–100% in smokers compared with nonsmokers by induction of several metabolising enzymes
Cytochrome P450-1A2
Smoking cessation for 1 week reduces the elimination of theophylline by 35%.
ERS 2004
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Smoking and TB Form a Deadly Combination
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• Cigarette smokers may be up to three times more likely to develop latent TB infection than non-smokers
• For a person with latent TB infection, cigarette smoking increases
their risk of developing active TB disease by two to three times, compared to non-smokers
• Smoking reduces the effectiveness of TB treatment which can lead to longer periods of infection and/or more severe forms of the disease
• Smoking is associated with recurrent tuberculosis disease and increase the risk of relapse
• Up to one in every five deaths from tuberculosis could be avoided if the patients were not smokers
“STOP TB” Is Incomplete Without “QUIT SMOKING”
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Women who smoke have increased risks for conception delay and for both primary and secondary infertility
Smoking cessation by women during their reproductive years reduces the risk for infertility.
Smoking causes women to reach menopause one to two years early, but former smokers have an age at natural menopause similar to those who have never smoked
AMERICAN SOCIETY FOR REPRODUCTIVE MEDICINE 2003 ASH Factsheet: Smoking and reproduction 2008
Impact of cigarette smoking on reproduction in women
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Smoking is strongly associated with an increased risk of spontaneous miscarriage and possibly ectopic pregnancy.
Women who smoke during pregnancy are about twice as likely to experience premature rupture of membranes, placental abruption, and placenta previa during pregnancy
Pregnant women who smoke cigarettes run an increased risk of having stillborn or premature infants or infants with low birth weight.
AMERICAN SOCIETY FOR REPRODUCTIVE MEDICINE 2003 ASH Factsheet: Smoking and reproduction 2008
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Women who stop smoking before pregnancy or during the first 3 to 4 months of pregnancy reduce their risk of having a low birthweight baby to that of women who never smoked
Reducing the number of cigarettes smoked, rather than quitting completely, does not appear to benefit birthweight of the foetus.
AMERICAN SOCIETY FOR REPRODUCTIVE MEDICINE 2003 ASH Factsheet: Smoking and reproduction 2008
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Smoking cigarettes may contribute to inadequate breast milk production In breastfeeding mothers who smoke, milk output is reduced by more than 250 ml per day compared with non-smoking mothers.
Nicotine is rapidly transported from the smoking mother’s blood to her breast milk. The infant may be less willing to feed since the breast milk tastes bad.
ASH Factsheet: Smoking and reproduction February 2011
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Impact of cigarette smoking on reproduction in men
Men who smoke cigarettes have a lower sperm count and motility and increased abnormalities in sperm shape and function.
Significant association between smoking and male sexual impotence with the association increasing with the number of cigarettes smoked per day
There is no “safe” level of smoking , even light smoking is associated with reduced male fertility
AMERICAN SOCIETY FOR REPRODUCTIVE MEDICINE 2003 ASH Factsheet: Smoking and reproduction 2008
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Smoking should be discouraged for both male and female partners in couples with a history of infertility or recurrent miscarriage. Smoking cessation may improve natural fertility and success rates with infertility treatment.
Smoking cessation for at least two months before attempting in vitro fertilization (IVF) significantly improved chances for conception.
AMERICAN SOCIETY FOR REPRODUCTIVE MEDICINE 2003 ASH Factsheet: Smoking and reproduction 2008
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Danish study (Lancet 2002;359:114)RandomisedCessation 6-8 weeks before surgeryFewer wound-related complications, reduced cardiovascular complications and secondary surgeryOverall complication rate was 18% in the smoking intervention group and 52% in controls Shorter hospital stay
Postoperative complications
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Smoking has an inhibiting effect on estrogen,the most important hormone in preventing the loss of bone tissue. Smoking is one of the risk factors for osteoporosis which is a major cause of hip fracture. Postmenopausal women who smoke have lower bone density and an increased risk for hip fracture than women who never smoked. Stopping smoking prevents further excess bone loss.
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Smokers have an increased risk of developing duodenal and gastric ulcers. Ulcer disease is more severe, less likely to heal, and more likely to recur in smokers. The increased risk is reduced by stopping smoking.
Risk of periodontal disease minimised by cessation
Cataract risk reduced
Other benefits of cessation
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Adolescents
Grimshaw GM, et al. Tobacco cessation interventions for young people. Cochrane Database Systematic Reviews. 2006
Teenagers care about the immediate benefitsto their appearance, well being and financial status
rather more than future health gains
• Address the issues that matter to the teenager
• Brief interventions are likely to be effective
• Pharmacotherapies are not licensed in teenagers
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Smoking can prematurely age the skin , Smokers’ skin can be prematurely aged by between 10 and 20 years
The risk of moderate or severe facial wrinkling is 3 times as high for women who smoke than those who have never smoked and twice as high for male smokers
“Tobacco kills beauty and much more.”
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You’ll Save Money
Smoking is expensive - multiply how much money you spend on tobacco every day by 365 (days per year).
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Your Self Esteem Will Improve
• You will feel more in control of your life.
• Your self esteem will improve by knowing you are doing something positive to help yourself!
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You’ll Look Better
• Your clothes and breath will no longer smell like smoke.
• Your teeth will be whiter.
• You’ll lose the yellow nicotine stains on your fingers
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Food Will Taste Better
• Your sense of smell and taste will return!
• Your appetite will improve and you’ll get more enjoyment out of eating!
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Be good role model by either not smoking, or quitting
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You’ll Protect Those You Love
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The benefits of quitting
Action on Smoking and Health (ASH) Factsheet Number 11: Stopping Smoking. http://www.ash.org.uk
8 hoursNicotine and carbon monoxide levels halved,Blood oxygen levels return to normal
24 hoursCarbon monoxide eliminated from the body
48 hoursNicotine eliminated from the body,Taste buds start to recover
Within hours.......
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The benefits of quitting
Action on Smoking and Health (ASH) Factsheet Number 11: Stopping Smoking. http://www.ash.org.uk
1 monthAppearance improves skin loses greyish pallor, less wrinkled Regeneration of respiratory cilia startsWithdrawal symptoms have stopped
3-9 monthsCoughing and wheezing decline lung function increased by 10%
Within months .......
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IT’S NEVER TOO LATE TO QUIT
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The Role of Health Professionals
In Tobacco Control
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A smoking aware practice
Adapted from Litt J, et al. Asia Pacific Fam Med. 2003; 2: 175-9
Increase in quit rate
GP time
A ‘no-smoking practice’
Brief intervention
Moderate intervention
Intense intervention
>5 mins
<1 mins
2-5 mins
2 fold
3 fold
4 fold
5-7 fold
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• Health professionals can make their own organizations’ premises and events tobacco-free
• Include tobacco control in the agenda of all relevant health-related congresses and conferences
• Health institutions and educational centres has to include tobacco control in their health professionals’ curricula
• We must promote and enforce a policy of smoke-free environments for all places
Recommendations
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All smokers should be offered brief advice to quit
Making smoking cessation part of your practice At the individual level, health professionals should be tobacco free role models
Recommendations
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