Study ratifies link of processed meat to cardiovascular disease and death

processed meat
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A global study led by Hamilton scientists has found a link between eating processed meat and a higher risk of cardiovascular disease. The same study did not find the same link with unprocessed red meat or poultry.

The information comes from the diets and health outcomes of 134,297 people from 21 countries spanning five continents, who were tracked by researchers for data on consumption and cardiovascular illnesses.

After following the participants for almost a decade, the researchers found consumption of 150 grams or more of a week was associated with a 46 percent higher risk of cardiovascular disease and a 51 percent higher risk of death than those who ate no processed meat.

However, the researchers also found moderate levels of consumption of non-processed meats had a neutral effect on health.

"Evidence of an association between meat intake and cardiovascular disease is inconsistent. We therefore wanted to better understand the associations between intakes of , poultry, and processed meat with major cardiovascular disease events and mortality," said Romaina Iqbal, first author of the study and an associate professor at the Aga Khan University in Karachi, Pakistan.

"The totality of the available data indicates that consuming a modest amount of unprocessed meat as part of a healthy dietary pattern is unlikely to be harmful," said Mahshid Dehghan, investigator for the Population Health Research Institute (PHRI) of McMaster University and Hamilton Health Sciences.

The Prospective Urban Rural Epidemiology (PURE) study was launched in 2003 and is the first multinational study that provides information on the association between unprocessed and processed meat intakes with health outcomes from low, middle and high-income countries.

"The PURE study examines substantially more diverse populations and broad patterns of diet, enabling us to provide new evidence that distinguishes between the effects of processed and unprocessed meats," said senior author Salim Yusuf, executive director of the PHRI.

Participants' were recorded using food frequency questionnaires, while data was also collected on their mortality and major cardiovascular disease events. This allowed researchers to determine the associations between meat consumption patterns and cardiovascular disease events and mortality.

The authors believe that additional research may improve current understanding of the relationship between meat and health outcomes. For example, it is unclear what study participants with lower meat intakes were eating instead of meat, and if the quality of those foods differed between countries.

Non-meat food substitutes may have implications in further interpreting the associations between and . Nonetheless, the study's authors believe their findings "indicate that limiting the intake of processed meat should be encouraged."


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More information: Iqbal R, Dehghan M, Mente A, Rangajaran S, Wielgosz A, Avezum A, Seron P, AlHabib KF, Lopez-Jaramillo P, Swaminathan S, et al. Associations of unprocessed and processed meat intake with mortality and cardiovascular disease in 21 countries [Prospective Urban Rural Epidemiology (PURE) Study]: a prospective cohort study. The American Journal of Clinical Nutrition, nqaa448, doi.org/10.1093/ajcn/nqaa448.
Citation: Study ratifies link of processed meat to cardiovascular disease and death (2021, March 31) retrieved 15 April 2021 from https://medicalxpress.com/news/2021-03-ratifies-link-meat-cardiovascular-disease.html
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