Increased consumption of fruit and vegetables is related to a reduced risk of coronary heart disease: meta-analysis of cohort studies

Increased consumption of fruit and vegetables has been shown to be associated with a reduced risk of coronary heart disease (CHD) in many epidemiological studies, however, the extent of the association is uncertain. We quantitatively assessed the relation between fruit and vegetable intake and incidence of CHD by carrying out a meta-analysis of cohort studies. Studies were included if they reported relative risks (RRs) and corresponding 95% confidence interval (CI) of CHD with respect to frequency of fruit and vegetable intake. Twelve studies, consisting of 13 independent cohorts, met the inclusion criteria. There were 278 459 individuals (9143 CHD events) with a median follow-up of 11 years. Compared with individuals who had less than 3 servings/day of fruit and vegetables, the pooled RR of CHD was 0.93 (95% CI: 0.86–1.00, P=0.06) for those with 3–5 servings/day and 0.83 (0.77–0.89, P<0.0001) for those with more than 5 servings/day. Subgroup analyses showed that both fruits and vegetables had a significant protective effect on CHD. Our meta-analysis of prospective cohort studies demonstrates that increased consumption of fruit and vegetables from less than 3 to more than 5 servings/day is related to a 17% reduction in CHD risk, whereas increased intake to 3–5 servings/day is associated with a smaller and borderline significant reduction in CHD risk. These results provide strong support for the recommendations to consume more than 5 servings/day of fruit and vegetables.

Characterization of apolipoprotein E genetic variations in Taiwanese: assocation with coronary heart disease and plasma lipid levels

Apolipoprotein E (apoE, protein; APOE, gene) is important in lipoprotein metabolism. Three isoforms, apoE2 (Cys112 Cys158), apoE3 (Cys112 Arg158), and apoE4 (Arg112 Arg158), are present in the general population. This report investigates the frequency distribution of apoE isoforms and the association of APOE genotypes with plasma lipid profile and coronary heart disease (CHD) in a population of Taiwan. ApoE isoforms were determined genetically by polymerase chain reaction and HhaI restriction enzyme digestion in control and coronary heart disease (CHD) patients. Plasma lipid and lipoprotein concentrations were also determined. The control group exhibited frequencies of 84.6% APOE3, 7.9% APOE4, 7.5% APOE2, 70.6% APOE3E3, 14.4% APOE3E4, 13.6% APOE2E3, and 1.4% APOE2E4. Comparable frequencies were observed in the CHD group. In both APOE2 carrier and APOE3E3 groups, the CHD patients expressed abnormal lipid profiles while the control group expressed normal lipid profiles. The APOE4 carriers, however, expressed abnormal lipid profiles in both normal control and CHD groups. Extremely high apoE levels in the hypertriglyceridemic group (TG > 400 mg/dL) seemed to be undesirable and were often observed in CHD patients

Identifying the health and mental health information needs of people with coronary heart disease, with and without depression

Objective:
To identify the health and mental health information needs of people with coronary heart disease (CHD), with and without comorbid depression.

Design and setting:
A qualitative study conducted in Melbourne in 2006, using thematic analysis of semi-structured interviews on the types of health information that patients with CHD considered useful to assist with the management of their illness. Structured clinical interviews were used to assess current and prior depressive episodes in these patients.

Participants:
14 general practice patients (eight with current or prior history of major depression) who had experienced myocardial infarction, coronary artery bypass graft surgery, angioplasty or angina (confirmed via testing).

Results:
Four themes relating to information on how patients could manage their cardiovascular health and improve their psychosocial wellbeing emerged: psychosocial; physical activity; medical; and information for family. The most prominent information needs included identification and management of risk-related physical symptoms, and psychosocial information, most notably to enhance patients’ social support. Patients considered this information important for alleviating health anxiety and negative affect.

Conclusion:
This small patient sample endorsed the need for health and mental health information on a range of psychosocial and physical health topics. Participants desired specific types of information to assist with the self-management of their health and to assuage their health concerns.

Food patterns associated with blood lipids are predictive of coronary heart disease : the Whitehall II study

Analysis of the epidemiological effects of overall dietary patterns offers an alternative approach to the investigation of the role of diet in CHD. We analysed the role of blood lipid-related dietary patterns using a two-step method to confirm the prospective association of dietary pattern with incident CHD. Analysis is based on 7314 participants of the Whitehall II study. Dietary intake was measured using a 127-item FFQ. Reduced rank regression (RRR) was used to derive dietary pattern scores using baseline serum total and HDL-cholesterol, and TAG levels as dependent variables. Cox proportional hazard regression was used to confirm the association between dietary patterns and incident CHD (n 243) over 15 years of follow-up. Increased CHD risk (hazard ratio (HR) for top quartile: 2·01 (95 % CI 1·41, 2·85) adjusted for age, sex, ethnicity and energy misreporting) was observed with a diet characterised by high consumption of white bread, fried potatoes, sugar in tea and coffee, burgers and sausages, soft drinks, and low consumption of French dressing and vegetables. The diet-CHD relationship was attenuated after adjustment for employment grade and health behaviours (HR for top quartile: 1·81; 95 % CI 1·26, 2·62), and further adjustment for blood pressure and BMI (HR for top quartile: 1·57; 95 % CI 1·08, 2·27). Dietary patterns are associated with serum lipids and predict CHD risk after adjustment for confounders. RRR identifies dietary patterns using prior knowledge and focuses on the pathways through which diet may influence disease. The present study adds to the evidence that diet is an important risk factor for CHD.

Patterns of coronary heart disease mortality over the 20th century in England and Wales : possible plateaus in the rate of decline

Background
Coronary heart disease (CHD) rates in England and Wales between 1950 and 2005 were high and reasonably steady until the mid 1970s, when they began to fall. Recent work suggests that the rate of change in some groups has begun to decrease and may be starting to plateau or even reverse.

Methods
Data for all deaths between 1931 and 2005 in England and Wales were grouped by year, sex, age at death and contemporaneous ICD code for CHD as cause of death. CHD mortality rates by calendar year and birth cohort were produced for both sexes and rates of change were examined.

Results
The pattern of increased burden of CHD mortality within older age groups has only recently emerged in men, whereas it has been established in women for far longer. CHD mortality rates among younger people showed little variation by birth cohort. For younger women (49 and under), the rate of change in CHD mortality has reversed in the last 20 years, indicating a future plateau and possible reversal of previous improvement in CHD mortality rates. Among younger men the rate of change in CHD mortality has been consistent for the past 15 years indicating that rates in this group have continued to fall steadily.

Conclusion
Although CHD mortality rates continue to drop in older age groups the actual burden of coronary heart disease is increasing due to the ageing of the population. The rate of improvement in CHD mortality appears to be beginning to decline and may even be reversing among younger women.

Coronary heart disease trends in England and Wales from 1984 to 2004 : concealed levelling of mortality rates among young adults

Background: Trends in cardiovascular risk factors among UK adults present a complex picture. Ominous increases in obesity and diabetes among young adults raise concerns about subsequent coronary heart disease (CHD) mortality rates in this group.

Objective: To examine recent trends in age-specific mortality rates from CHD, particularly those among younger adults.

Methods and results: Mortality data from 1984 to 2004 were used to calculate age-specific mortality rates for British adults aged 35+ years, and joinpoint regression was used to assess changes in trends. Overall, the age-adjusted mortality rate decreased by 54.7% in men and by 48.3% in women. However, among men aged 35–44 years, CHD mortality rates in 2002 increased for the first time in over two decades. Furthermore, the recent declines in CHD mortality rates seem to be slowing in both men and women aged 45–54. Among older adults, however, mortality rates continued to decrease steadily throughout the period.

Conclusions: The flattening mortality rates for CHD among younger adults may represent a sentinel event. Deteriorations in medical management of CHD appear implausible. Thus, unfavourable trends in risk factors for CHD, specifically obesity and diabetes, provide the most likely explanation for the observed trends.

Values underlying the National Service Framework for coronary heart disease in England : a discourse analysis

OBJECTIVES: The National Service Framework (NSF) for Coronary Heart Disease--published by the English Department of Health in 2000--sets out how those within the health service should seek to prevent and treat coronary heart disease and care for people with the disease. Its prescriptions are partly based on what is known about coronary heart disease and partly on its underlying 'values'. This paper seeks to identify those values.

METHODS:An analysis of the discourses within the text of the NSF based on critical discourse analysis.

RESULTS: Three different discourses can be identified: the managerial, the clinical and the political. The managerial discourse is dominant. Each discourse has its own values. The main 'aspirational' values within the NSF are efficiency, effectiveness, autonomy (choice), universalism and equity. Some aspirational values--particularly equity--appear to be largely rhetorical and lead to few recommendations or prescriptions. Some values that might have been expected to underlie the framework, such as compassion and democracy, are largely absent.

CONCLUSIONS: Discourse analysis provides a more systematic and transparent method of describing the values behind health care policy than the methods that have been used previously.

Validation of model-based estimates (synthetic estimates) of the prevalence of risk factors for coronary heart disease for wards in England

Several sets of model-based estimates (synthetic estimates) of the prevalence of risk factors for coronary heart disease for small areas in England have been developed. These have been used in policy documents to indicate which areas are in need of intervention. In general, these models have not been subjected to validity assessment. This paper describes a validity assessment of 16 sets of synthetic estimates, by comparison of the models with national, regional and local survey-based estimates, and local mortality rate estimates. Model-based estimates of the prevalence of smoking, low fruit and vegetable consumption, obesity, hypertension and raised cholesterol are found to be valid.

Coronary heart disease statistics

This is the fourteenth edition of Coronary heart statistics produced by the British Heart Foundation.

It is divided into 13 chapters.

* The first two chapters on mortality and morbidity deal with demographic trends in CHD and related diseases of the circulatory system.
* Following a section on treatment of CHD there are chapters on the main modifiable risk factors for the disease: smoking, an unhealthy diet, lack of physical activity, a high alcohol consumption, poor psychosocial wellbeing, raised blood pressure, raised blood cholesterol, obesity and diabetes.
* The final chapter provides information about the economic costs of CHD.

The compendium was published by the British Heart Foundation in May 2006.

Coronary heart disease statistics

This is the fifteenth edition of Coronary Heart Disease Statistics produced by the British Heart Foundation.

It is divided into 13 chapters.

* The first two chapters on mortality and morbidity deal with demographic trends in CHD and related diseases of the circulatory system.
* Following a section on treatment of CHD there are chapters on the main modifiable risk factors for the disease: smoking, an unhealthy diet, lack of physical activity, a high alcohol consumption, poor psychosocial wellbeing, raised blood pressure, raised blood cholesterol, obesity and diabetes.
* The final chapter provides information about the economic costs of CHD.

The compendium was published by the British Heart Foundation in July 2007.

Coronary heart disease statistics

This is the sixteenth edition of Coronary Heart Disease Statistics produced by the British Heart Foundation.

It is divided into 13 chapters.

* The first two chapters on mortality and morbidity deal with demographic trends in CHD and related diseases of the circulatory system.
* Following a section on treatment of CHD there are chapters on the main modifiable risk factors for the disease: smoking, an unhealthy diet, lack of physical activity, a high alcohol consumption, poor psychosocial wellbeing, raised blood pressure, raised blood cholesterol, obesity and diabetes.
* The final chapter provides information about the economic costs of CHD.

The compendium was published by the British Heart Foundation in July 2008.

Regional and social differences in coronary heart disease

This publication provides statistics on regional and social differences in relation to CHD mortality, morbidity, treatment and risk.