Smokeless Tobacco not a Good Choice

Published on September 1st, 2009 09:44

Smokless tobacco products

"Smokeless tobacco products are safer than cigarettes", is not a valid confirmation. A recent study found that the use of smokeless tobacco products was associated with an increased risk for deadly myocardial infarction (MI) and stroke.

In recent decades the use of oral and nasal smokeless tobacco products such as snuff and chewing tobacco has increased, especially among people younger than 40, based on requires of less health risk than smoking.

But unfortunately smokeless tobacco does pose possible health risks related to MI and stroke, possibly because of increases in blood pressure and heart rate, as well as associations with diabetes, metabolic syndrome, and obesity, according to the investigators. Scientists consider that is very important to determine the role of smokeless tobacco especially in cardiovascular diseases, because it given the high rate and mortality from these diseases.

So they launched a regular review that involved 11 studies, eight from Sweden and three from the U.S.

Eight were next group studies, three were population-based case-control studies, and nine included only people who had never smoked tobacco. Most of these studies included only men.

Among the nine studies that estimated risk for any MI, the risk associated with ever having used smokeless tobacco was 0.99 (95% CI 0.89 to 1.10).

The lack of joining with any MI included both current and former users, and when the analysis was limited to cohort studies the relation risk for any MI was 1.04 (95% CI 0.95 to 1.14).

Among the eight studies was found the risk for fatal MI, but the excess risk was present only for current, not former, smokeless tobacco use. In the only one study that investigated risk according to duration or frequency of use, no important trend was seen for fatal stroke, but the relative risk was higher among those with a long history of use.

And in the single study that reported stroke risk by type of event, the relative risk was higher for fatal anemic stroke (RR 1.63, 95% CI 1.02 to 2.62) than for fatal hemorrhagic stroke (RR 1.05, 95% CI 0.61 to 1.80).

The risks for fatal MI and stroke were seen in studies both from the U.S. and Sweden. Scientists concluded that the proportion of deaths from MI that was attributable to smokeless tobacco products was 0.5% in the U.S. and 5.6% in Sweden, while the corresponding numbers for stroke were 1.7% and 5.4%.

Related tags: smokeless tobacco | chewing tobacco | tobacco products

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