Verband meeroken en hartziektes veel lager dan gedacht

Door de anti-roken beweging is tot nu toe aangenomen dat er een 25% verhoogde kans op hartziekten optreedt bij meeroken. Een nieuwe meta-analyse door Enstrom (University of California, Los Angeles, California, USA) en Kabat (New Rochelle, New York, USA), op een groot aantal bestaande onderzoeken laat echter zien dat dit percentage een factor 5 te hoog is. Zij komen uit op maximaal een verhoogde kans van 5% waardoor het een zo goed als verwaarloosbaar effect betreft.

When all relevant studies are included in the meta-analysis and results are appropriately combined, current or ever exposure to ETS, as approximated by spousal smoking, is associated with roughly a 5% increased risk of death from CHD in never smokers. Furthermore, there is no dose-response relationship and no elevated risk associated with the highest level of ETS exposure in males or females. An objective assessment of the available epidemiologic evidence indicates that the association of ETS with CHD death in U.S. never smokers is very weak. Previous assessments appear to have overestimated the strength of the association.

Several major meta-analyses have concluded that exposure to environmental tobacco smoke (ETS) increases the risk of coronary heart disease (CHD) by about 25% among never smokers. However, these reviews have excluded a large portion of the epidemiologic evidence on questionable grounds and have been inconsistent in the selection of the results that are included. We conducted an updated meta-analysis and critique of the evidence on ETS exposure and its relationship to death from CHD among never smokers. Our focus is on the U.S. cohort studies, which provide the vast majority of the available evidence. ETS exposure is assessed in terms of spousal smoking, self-reported estimates, and personal monitoring. The epidemiologic results are summarized by means of overall relative risks and dose-response relationships. The methodological issues of publication bias, exposure misclassification, and confounding are discussed. Several large studies indicate that spousal smoking history is a valid measure of relative exposure to ETS, particularly for females. Personal monitoring of nonsmokers indicates that their average ETS exposure from a smoking spouse is equivalent in terms of nicotine exposure to smoking less than 0.1 cigarettes per day. When all relevant studies are included in the meta-analysis and results are appropriately combined, current or ever exposure to ETS, as approximated by spousal smoking, is associated with roughly a 5% increased risk of death from CHD in never smokers. Furthermore, there is no dose-response relationship and no elevated risk associated with the highest level of ETS exposure in males or females. An objective assessment of the available epidemiologic evidence indicates that the association of ETS with CHD death in U.S. never smokers is very weak. Previous assessments appear to have overestimated the strength of the association.

Inhalation technology abstract

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  • "Es ist schwieriger, eine vorgefaßte Meinung zu zertrümmern als ein Atom."
    (Het is moeilijker een vooroordeel aan flarden te schieten dan een atoom.)
    Albert Einstein

  • "Als je alles zou laten dat slecht is voor je gezondheid, dan ging je kapot"
    Anonieme arts

  • "The effects of other people smoking in my presence is so small it doesn't worry me."
    Sir Richard Doll, 2001

  • "Een leugen wordt de waarheid als hij maar vaak genoeg wordt herhaald"
    Joseph Goebbels, Minister van Propaganda, Nazi Duitsland


  • "First they ignore you, then they laugh at you, then they fight you, then you win."
    Mahatma Gandhi

  • "There''s no such thing as perfect air. If there was, God wouldn''t have put bristles in our noses"
    Coun. Bill Clement

  • "Better a smoking freedom than a non-smoking tyranny"
    Antonio Martino, Italiaanse Minister van Defensie

  • "If smoking cigars is not permitted in heaven, I won't go."
    Mark Twain

  • I've alllllllways said that asking smokers "do you want to quit?" and reporting the results of that question, as is, is horribly misleading. It's a TWO part question. After asking if one wants to quit it must be followed up with "Why?" Ask why and the majority of the answers will be "because I'm supposed to" (victims of guilt and propaganda), not "because I want to."
    Audrey Silk, NYCCLASH