A study published in Archives of Internal Medicine reveals that subclinical hyperthyroidism (SCH) may be linked to a greater risk of total mortality, coronary heart disease (CHD) death, as well as incident atrial fibrillation (AF). The findings also indicate that the risk of AF and CHD death is higher when thyrotropin levels are below 0.10 mIU/L. SCH is a relatively common condition defined by low thyrotropin levels with normal concentrations of free thyroxine (FT 4 ) and triiodothyronine (T 3 ). Earlier studies have suggested that SCH, which is often asymptomatic, is linked to cardiovascular system effects, increased heart rate, incident AF, as well as CHD. However, these prospective studies have produced conflicting results and conclusions from study-level meta-analyses have been contradicting.
At Experimental Biology (EB) 2012 in San Diego, experts convened to discuss the latest science in a variety of health and disease-related areas, including nutrition. Research on whole egg consumption in individuals with metabolic syndrome as well as the positive effects of a higher-protein breakfast is further revealing the potential benefits of including eggs in the diet. Whole Egg Consumption May Improve Markers of Metabolic Syndrome A University of Connecticut study presented this week suggests that eating eggs may actually have favorable effects on HDL metabolism in men and women with metabolic syndrome.(i) Participants in the study followed a carbohydrate-restricted diet with some individuals eating three whole eggs per day and others eating an equivalent amount of egg substitute. After 12 weeks, the group eating whole eggs experienced an improvement in HDL measures showing significantly greater increases in the number and size of HDL particles.
Coronary artery disease continues to be a major cause of death in the U.S., killing hundreds of thousands of people per year. However, this disease burden isn't evenly divided between the sexes; significantly more men than women are diagnosed with coronary artery disease each year. The reasons behind this difference aren't well defined. Though some studies have shown that men's hearts become more constricted than women's during exercise, letting less blood flow through, women are more likely than men to have symptoms of heart trouble after emotional upsets. Searching for the reasons behind these disparities, Charity L. Sauder, Alison E. Thompson, Terrell Myers, and Chester A. Ray, all of Penn State College of Medicine, investigated the effects of mental stress on blood flow through the heart.
A new systematic review by The Cochrane Library researchers has demonstrated that the risk of post-operative atrial fibrillation can be reduced by administering pre-operative statin therapy, in addition to reducing patients' ICU (intensive care unit) stay and hospital stay in those undergoing cardiac surgery. However, around the time of surgery, statin pre-therapy showed no impact on the risk of stroke, heart attack, kidney failure or death. Statins decrease the levels of lipids in the blood, which reduces the mortality risk in patients with coronary heart disease. Researchers from the University of Cologne decided to investigate whether patients about to undergo heart surgery would also benefit from taking statins prior to surgery and examined data found in 11 randomized controlled studies, which included a total of 984 participants who were undergoing various types of heart surgery.
The American Association for Dental Research (AADR) acknowledged the very comprehensive review of the literature undertaken by the American Heart Association (AHA) on the relationship between periodontal disease and heart disease. The review titled "Periodontal disease and atherosclerotic vascular disease: Does the evidence support an independent association?: A scientific statement from the American Heart Association" was published online in Circulation. The review assessed, 1) whether available data supported an independent association between atherosclerotic vascular disease (ASVD) and periodontal disease, and 2) whether available data supported that periodontal treatment might modify ASVD risks or outcomes. The extensive review of current literature - including more than 40 epidemiologic observational studies - did indeed support an association between periodontal disease and ASVD independent of known cofounders.