Featured Research

from universities, journals, and other organizations

'Lite' Low Tar Cigarettes Impair Blood Flow As Much As Regular Cigarettes

Date:
May 15, 2007
Source:
BMJ Specialty Journals
Summary:
Low tar "lite" cigarettes impair blood flow through the heart as severely as regular cigarettes, reveals a new small study. The findings are based on 62 people in their mid 20s, with no evidence of coronary artery disease.

Low tar "lite" cigarettes impair blood flow through the heart as severely as regular cigarettes, reveals a small study published ahead of print in the journal Heart. The findings are based on 62 people in their mid 20s, with no evidence of coronary artery disease.

Twenty had smoked low tar, low nicotine cigarettes (8 mg tar, 0.6 mg nicotine, and 9 mg carbon monoxide) for at least three years. Twenty others had smoked regular cigarettes for the same period (12 mg tar, 0.9 mg nicotine, and 12 mg carbon monoxide), and the remainder were non-smokers.

Cigarette smoking is responsible for a fifth of all deaths from cardiovascular disease and triples the risk of heart failure in later life.

All participants were assessed for cardiovascular fitness, and in the case of the smokers, these tests were carried out two days before and 30 minutes after smoking two of their usual cigarettes within the space of 15 minutes.

The researchers focused on coronary flow velocity reserve (CFVR), which is a measure of how readily coronary arteries can dilate in response to increased blood flow.

The two groups of smokers were similar in terms of their general health and the number of cigarettes they regularly smoked. The test results showed that blood pressure and heart rate both climbed after smoking, irrespective of cigarette type.

Similarly, CFVR, which was already lower in both groups of smokers than it was in the non-smokers, fell further still after smoking. This was irrespective of cigarette type. CFVR fell sharply from 2.68 to 2.05 in the low tar smokers, and from 2.65 to 2.18 in the regular tar smokers. The CFVR was 3.11 in the non-smokers.

The authors say their results show that both light cigarettes and regular cigarettes impair blood flow through the coronary arteries to a similar degree. They add that many smokers switch to low tar, low nicotine cigarettes in the mistaken belief that they will reduce some of the hazardous effects of smoking.


Story Source:

The above story is based on materials provided by BMJ Specialty Journals. Note: Materials may be edited for content and length.


Cite This Page:

BMJ Specialty Journals. "'Lite' Low Tar Cigarettes Impair Blood Flow As Much As Regular Cigarettes." ScienceDaily. ScienceDaily, 15 May 2007. <www.sciencedaily.com/releases/2007/05/070515074929.htm>.
BMJ Specialty Journals. (2007, May 15). 'Lite' Low Tar Cigarettes Impair Blood Flow As Much As Regular Cigarettes. ScienceDaily. Retrieved July 28, 2014 from www.sciencedaily.com/releases/2007/05/070515074929.htm
BMJ Specialty Journals. "'Lite' Low Tar Cigarettes Impair Blood Flow As Much As Regular Cigarettes." ScienceDaily. www.sciencedaily.com/releases/2007/05/070515074929.htm (accessed July 28, 2014).

Share This




More Health & Medicine News

Monday, July 28, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

$15B Deal on Vets' Health Care Reached

$15B Deal on Vets' Health Care Reached

AP (July 28, 2014) A bipartisan deal to improve veterans health care would authorize at least $15 billion in emergency spending to fix a veterans program scandalized by long patient wait times and falsified records. (July 28) Video provided by AP
Powered by NewsLook.com
Traditional African Dishes Teach Healthy Eating

Traditional African Dishes Teach Healthy Eating

AP (July 28, 2014) Classes are being offered nationwide to encourage African Americans to learn about cooking fresh foods based on traditional African cuisine. The program is trying to combat obesity, heart disease and other ailments often linked to diet. (July 28) Video provided by AP
Powered by NewsLook.com
West Africa Gripped by Deadly Ebola Outbreak

West Africa Gripped by Deadly Ebola Outbreak

AFP (July 28, 2014) The worst-ever outbreak of the deadly Ebola epidemic grips west Africa, killing hundreds. Duration: 00:48 Video provided by AFP
Powered by NewsLook.com
Trees Could Save More Than 850 Lives Each Year

Trees Could Save More Than 850 Lives Each Year

Newsy (July 27, 2014) A national study conducted by the USDA Forest Service found that trees collectively save more than 850 lives on an annual basis. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins