Red and Processed Meat and Mortality in a Low Meat Intake Population

Area of Science:

• Nutrition Science
• Epidemiology
• Public Health

Background:

• Dietary patterns significantly influence health outcomes, with red and processed meat consumption being a focus of research.
• Previous studies suggest potential adverse effects of red and processed meats, but evidence on low-to-moderate consumption is still developing.

Purpose of the Study:

• To investigate the association between red and processed meat intake and all-cause, cardiovascular disease (CVD), and cancer mortality.
• To add to the evidence base regarding the health impacts of commonly consumed meats.

Main Methods:

• Prospective cohort study (Adventist Health Study-2) with 72,149 participants followed for a mean of 11.8 years.
• Dietary intake assessed via validated quantitative food frequency questionnaire (FFQ) and calibrated 24-hour recalls.
• Mortality data obtained from the National Death Index; statistical analysis using Cox proportional hazards regression.

Main Results:

• Unprocessed red meat intake was associated with increased all-cause mortality (HR: 1.18) and CVD mortality (HR: 1.26).
• Combined intake of red and processed meat showed associations with higher all-cause mortality (HR: 1.23) and CVD mortality (HR: 1.34).
• Processed meat alone was not significantly associated with mortality risk in this cohort.

Conclusions:

• Moderately higher risks of all-cause and CVD mortality are associated with red and processed meat consumption.
• These findings are significant even within a population characterized by generally low meat intake.
• The study underscores the importance of dietary choices in relation to long-term health and mortality outcomes.