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Tobacco and Public Health - TCSC Indonesia

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Heavy drinking is known to cause gastritis of the stomach, a possible explanation why<br />

heavy drinking raises the risk of gastric cancer.<br />

Non-malignant disease<br />

ALBERT B. LOWENFELS AND PATRICK MAISONNEUVE<br />

Cardiovascular system<br />

Consumption of alcohol <strong>and</strong> tobacco has important implications for the heart <strong>and</strong> for<br />

the entire vascular system. There is strong evidence that high levels of exposure to<br />

either of these agents damages the heart, leading to both increased morbidity <strong>and</strong><br />

mortality. The main impact of tobacco relates to the increased risk of atherosclerosis,<br />

causing narrowing of coronary arteries <strong>and</strong>, eventually to myocardial infarction. Large<br />

amounts of alcohol are cardiotoxic, causing cardiomyopathy, <strong>and</strong> in some heavy<br />

drinkers, fatal cardiac arrhythmias.<br />

The interaction of these agents has been studied in healthy volunteers. Ethanol <strong>and</strong><br />

nicotine increased heart rate, <strong>and</strong> also increased the product of heart rate times blood<br />

pressure. The combination of exposure to both drugs could contribute to serious<br />

arrhythmias <strong>and</strong> sudden death, especially in persons with pre-existing coronary heart<br />

disease (Benowitz et al. 1986).<br />

In patients with pre-existing heart disease, both alcohol <strong>and</strong> tobacco are independent<br />

risk factors for disease progression. Evangelista <strong>and</strong> co-workers (Evangelista et al.<br />

2000) conducted a longitudinal study of 753 patients previously hospitalized with<br />

heart disease. In a multivariate analysis current smoking (odds ratio 1.8, 95% confidence<br />

interval 1.2–2.8) <strong>and</strong> current drinking (odds ratio 5.8, 95% confidence interval<br />

3.8–9.1) were independent predictors of readmission for heart disease.<br />

The deleterious effects of tobacco on the heart are dose-related, with no demonstrable<br />

‘safe’ level of exposure to tobacco. But for alcohol, there are several longitudinal studies<br />

suggesting that persons consuming low levels of alcohol—generally about 1 or perhaps<br />

two drinks per day, have a lower risk of cardiac disease than abstainers or than persons<br />

consuming larger quantities of alcohol do (Fuchs et al. 1995; Thun et al. 1997). The<br />

overall impact on large populations is questionable <strong>and</strong> if there is a benefit from light<br />

drinking, it is likely to affect males more than females, <strong>and</strong> older persons rather than<br />

younger persons.<br />

Pancreatitis<br />

The pancreas, unlike the mouth, the larynx, the esophagus or the stomach, does not<br />

come into direct contact with ingested alcohol. Alcohol reaches the pancreas via the<br />

blood stream, where it stimulates pancreatic secretion, either directly or via activation<br />

of the secretin mechanism. Moderate consumption of alcohol does not usually cause<br />

pancreatic injury, but heavy drinking is a major cause of both acute <strong>and</strong> chronic<br />

pancreatitis.<br />

There is evidence from many sources that the combination of heavy drinking <strong>and</strong><br />

smoking is especially injurious to the pancreas. Individuals who drink heavily tend to<br />

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