Robert C. Block

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BACKGROUND Increased blood levels of the omega-3 fatty acids (FA) eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) have been inversely associated with risk for sudden cardiac death, but their relationship with acute coronary syndromes (ACS) is unclear. OBJECTIVE We hypothesized that the EPA+DHA content of blood cell membranes, as a percent of(More)
Omega-3 [(n-3)] fatty acids have been linked to healthy aging throughout life. Recently, fish-derived omega-3 fatty acids EPA and DHA have been associated with fetal development, cardiovascular function, and Alzheimer's disease. However, because our bodies do not efficiently produce some omega-3 fatty acids from marine sources, it is necessary to obtain(More)
BACKGROUND: Although red blood cell eicosapentaenoic acid (EPA) plus docosahexaenoic acid (DHA) content (the Omega-3 Index) predicts cardiovascular death, the factors determining the Index are unknown. METHODS: In 704 outpatients, we undertook an investigation of the clinical determinants of the Index. RESULTS: Factors associated with the Index in(More)
Clinical guidance is deficient regarding deactivation of implantable cardioverter-defibrillators (ICDs) in patients with terminal illnesses. We hypothesized that many physicians are apprehensive about discussing ICD deactivation with their dying patients. Thus, we conducted an anonymous survey of all the physicians in the Department of Medicine at Unity(More)
BACKGROUND Although fatty acid intake has been associated with risk of coronary disease events, the association between blood omega-6 and trans fatty acids (FAs) at the time of an acute coronary syndrome (ACS) is unknown. METHODS The relationship of blood FA composition to ACS was analyzed in 768 incident cases and 768 controls (matched on age, sex, and(More)
Research dating back to the 1950s reported an association between the consumption of saturated fatty acids (SFAs) and risk of coronary heart disease. Recent epidemiological evidence, however, challenges these findings. It is well accepted that the consumption of SFAs increases low-density lipoprotein cholesterol (LDL-C), whereas carbohydrates,(More)
In cavitation experiments with deuterated acetone, tritium decay activity above background levels was detected. In addition, evidence for neutron emission near 2.5 million electron volts was also observed, as would be expected for deuterium-deuterium fusion. Control experiments with normal acetone did not result in tritium activity or neutron emissions.(More)
BACKGROUND Several studies suggest that physiological changes in pregnancy mimic early symptoms of tuberculosis. If true, this could influence the diagnostic delay of the disease and the outcome of pregnancy. METHODS From the register of the Public Health Centre, all female patients with culture-proven tuberculosis aged between 22 and 35 years in the(More)
INTRODUCTION The epidemiologic transition has made chronic disease a major health threat in the Caribbean and throughout the world. Our objective was to examine the pattern of lifestyle factors associated with cardiovascular disease (CVD) in Grenada and to determine whether the prevalence of CVD risk factors differs by subgroups. METHODS We conducted a(More)