Last Update 21:55
Thursday, 24 May 2018

Just one cigarette a day can lead to heart disease

There is no safe level of smoking.

Reuters , Sunday 4 Feb 2018
Reuters
Share/Bookmark
Views: 5496
Share/Bookmark
Views: 5496

Smoking just one cigarette a day carries half the risk for cardiovascular disease and stroke as a pack-a-day habit, according to research that concludes there is no safe level of smoking.

The study team analyzed data from 141 smaller studies to assess the risk of heart disease and stroke for people who smoked one, five or 20 cigarettes a day. Men who smoked one cigarette a day were 74 percent more likely to have heart disease and 30 percent more likely to have a stroke than men who never smoked at all, they report in The BMJ.

Women who smoked one cigarette daily were more than twice as likely to develop heart disease and 46 percent more likely to have a stroke than women who didn’t smoke.

“People who have always been light smokers will have a higher risk of cardiovascular disease than many of them expect,” said lead study author Allan Hackshaw of the Cancer Institute at University College London in the UK.

While their risk is still lower than for heavy smokers, the results should offer fresh motivation for light smokers to quit altogether, Hackshaw said by email. Heavy smokers, meanwhile, can benefit from cutting back even if they can’t quit.

“Cutting down is certainly better than smoking the same high amount,” Hackshaw advised. “And cutting down has significant reductions in the risk of cancer and other disorders; hence, it is absolutely important that people try this if they find it too difficult to stop completely.”

For example, men who smoked about a pack a day had more than twice the risk of heart disease as non-smokers, while the risk was 58 percent higher than nonsmokers’ for men who smoked five cigarettes a day and 48 percent higher for men who smoked just one.

Similarly, women who smoked five cigarettes daily had 43 percent of the excess of heart disease associated with a pack-a-day habit, while women who smoked one cigarette a day had 31 percent of the excess risk.

Compared to nonsmokers, men who smoked 20 cigarettes a day were 64 percent more likely to have a stroke and women had more than twice the risk for stroke.

The study wasn’t a controlled experiment designed to prove whether or how the number of cigarettes people smoke on a typical day might impact their risk of heart disease or stroke.

Another limitation of the analysis is that researchers lacked data on individual patient characteristics from many of the smaller studies, making it impossible to assess whether the study results might be explained by factors that can independently lead to stroke and heart disease and stroke such as obesity and diabetes.

Even so, the findings should serve as a reminder that no amount of smoking is safe, said Kenneth Johnson of the School of Epidemiology and Public Health at the University of Ottawa in Canada, who wasn’t involved in the study.

That’s because smoking can lead to an irregular heart beat, blood clots too well, thickening and stiffening of the artery walls and increased blood pressure, Johnson, author of an accompanying editorial, said by email.

 

Short link:

 

Email
 
Name
 
Comment's
Title
 
Comment
Ahram Online welcomes readers' comments on all issues covered by the site, along with any criticisms and/or corrections. Readers are asked to limit their feedback to a maximum of 1000 characters (roughly 200 words). All comments/criticisms will, however, be subject to the following code
  • We will not publish comments which contain rude or abusive language, libelous statements, slander and personal attacks against any person/s.
  • We will not publish comments which contain racist remarks or any kind of racial or religious incitement against any group of people, in Egypt or outside it.
  • We welcome criticism of our reports and articles but we will not publish personal attacks, slander or fabrications directed against our reporters and contributing writers.
  • We reserve the right to correct, when at all possible, obvious errors in spelling and grammar. However, due to time and staffing constraints such corrections will not be made across the board or on a regular basis.
Latest

© 2010 Ahram Online.