Red meat and coronary heart disease (CHD).

Background: In 2007, Qi L published data about a diabetic subgroup from "The Nurses' Health Study" relating red meat consumption to CHD. For the association with CHD risk, data about nonfatal MI - instead of total CHD - was included in the following analysis. Data about fatal CHD from this cohort was included in the analysis of CHD mortality, and therefore, data about total CHD would have led to a use of the CHD deaths in both following analysis'.
CHD risk: Data was provided by one cohort, including 1,610 cases. No association was found.
Effect modification: No data was found.
CHD mortality: Data was provided by 4 cohorts, including 1,119 cases. Significantly increased risks were found in 2 cohorts (Qi L [6]), Kelemen LE [17]). No associations were found in both remaining cohorts. The average RR = 1.45 (excluding incomplete data from Albert CM [10]).
Effect modification: Significantly increased risks were found in 2 cohort, including women only. No association was found in one cohort, including men only (Albert CM [10]). The average RR = 1.54 for women.

Conclusion: Significantly increased risks were found in 2 cohorts, one of which was of small size. These cohorts included women only. Suggestive evidence was found that red meat increases CHD mortality among women (+ 54%). No associations were found with CHD risk.

Prospective studies of red meat and heart disease risk:
AuthorCohort nameCasesRelative Risk (RR)
6) Qi L (2007)The Nurses' Health Study
(diabetic subjects)
259RR = 0.91 (0.56-1.47; P = 0.95).
6) Liu J (2003)The Nurses' Health Study1,351No significant association.
Total number of cases: 1,610


Prospective studies of red meat and heart disease mortality:
AuthorCohort nameCasesRelative Risk (RR)
17) Kelemen LE (2005)The Iowa Women's Health Study739RR = 1.44 (1.06-1.94; P = 0.02).
12) Whiteman D (1999)The OXCHECK Study94RR = 0.60 (0.31-1.18).
10) Albert CM (1998)The Physician's Health Study133No significant association.
6) Qi L (2007)The Nurses' Health Study
(diabetic subjects)
153RR = 2.05 (1.08-3.90; P = 0.039).
Total number of cases: 1,119Average RR = 1.45