Abstract
OBJECTIVE: To compare the prevalence of self-reported hypertension and mean systolic and diastolic blood pressures in four diet groups (meat eaters, fish eaters, vegetarians and vegans) and to investigate dietary and other lifestyle factors that might account for any differences observed between the groups. DESIGN: Analysis of cross-sectional data from participants in the Oxford cohort of the European Prospective Investigation into Cancer and Nutrition (EPIC-Oxford). SETTING: United Kingdom. SUBJECTS: Eleven thousand and four British men and women aged 20-78 years at blood pressure measurement. RESULTS: The age-adjusted prevalence of self-reported hypertension was significantly different between the four diet groups, ranging from 15.0% in male meat eaters to 5.8% in male vegans, and from 12.1% in female meat eaters to 7.7% in female vegans, with fish eaters and vegetarians having similar and intermediate prevalences. Mean systolic and diastolic blood pressures were significantly different between the four diet groups, with meat eaters having the highest values and vegans the lowest values. The differences in age-adjusted mean blood pressure between meat eaters and vegans among participants with no self-reported hypertension were 4.2 and 2.6 mmHg systolic and 2.8 and 1.7 mmHg diastolic for men and women, respectively. Much of the variation was attributable to differences in body mass index between the diet groups. CONCLUSIONS: Non-meat eaters, especially vegans, have a lower prevalence of hypertension and lower systolic and diastolic blood pressures than meat eaters, largely because of differences in body mass index.
Generated Summary
This is a cross-sectional analysis of data from the Oxford cohort of the European Prospective Investigation into Cancer and Nutrition (EPIC-Oxford) to compare the prevalence of self-reported hypertension and mean systolic and diastolic blood pressures in four diet groups (meat eaters, fish eaters, vegetarians, and vegans). The study aimed to investigate dietary and lifestyle factors that might account for any differences observed between these groups. The research approach involved analyzing data from 11,004 British men and women aged 20-78 years at blood pressure measurement. The study design focuses on the relationship between diet, specifically meat consumption, and blood pressure levels, examining variations across different dietary patterns. The objective centers on identifying the impact of dietary choices on cardiovascular health, with a focus on hypertension. The scope of the study is limited to the EPIC-Oxford cohort, providing a focused examination of the relationship between diet and hypertension in a specific population group.
Key Findings & Statistics
- The age-adjusted prevalence of self-reported hypertension varied significantly among the four diet groups.
- In male meat eaters, the prevalence was 15.0%, while in male vegans, it was 5.8%.
- For female meat eaters, the prevalence was 12.1%, and for female vegans, it was 7.7%.
- Fish eaters and vegetarians showed intermediate prevalences.
- Mean systolic and diastolic blood pressures differed significantly among the four diet groups.
- Meat eaters exhibited the highest blood pressure values, while vegans showed the lowest.
- The differences in age-adjusted mean blood pressure between meat eaters and vegans among participants with no self-reported hypertension were substantial.
- For men, the difference was 4.2 mmHg systolic and 2.8 mmHg diastolic.
- For women, the difference was 2.6 mmHg systolic and 1.7 mmHg diastolic.
- Much of the variation in blood pressure was attributed to differences in body mass index between the diet groups.
Other Important Findings
- Non-meat eaters, especially vegans, have a lower prevalence of hypertension.
- Non-meat eaters have lower systolic and diastolic blood pressures compared to meat eaters.
- These differences in blood pressure are largely due to differences in body mass index.
Limitations Noted in the Document
- The study is limited to a cross-sectional analysis, which means that it can only show associations, not causation.
- The study relies on self-reported hypertension, which may be subject to recall bias.
- The study population is limited to the Oxford cohort, which may not be representative of the general population.
- The study does not control for all potential confounding factors.
- The study’s focus on the EPIC-Oxford cohort may restrict the generalizability of the findings to other populations with different dietary habits or lifestyle factors.
Conclusion
The study underscores the significant relationship between dietary choices and cardiovascular health, specifically hypertension. The findings reveal a lower prevalence of hypertension and lower blood pressure levels among non-meat eaters, particularly vegans, when compared to meat eaters. This difference is largely attributed to variations in body mass index. The study’s conclusions suggest that adopting non-meat diets may have beneficial effects on blood pressure, contributing to reduced risk of hypertension. The findings of this study support previous research indicating a link between diet and cardiovascular health, highlighting the impact of dietary choices on specific health outcomes. The study underscores the value of considering dietary patterns in strategies aimed at preventing and managing hypertension, particularly when considering public health. Further research should explore the mechanisms by which different dietary patterns influence blood pressure and cardiovascular health, as well as address the limitations of the current study design.
IFFS Team Summary
- Vegetarians and especially vegans have the lowest BP compared to meat eaters, and partial vegetarians, and fish eaters
- Partial vegetarians better than full meat eaters
- Body Mass Index Played a large role