CongeladosSep. 22, 2011
Estudio muestra que consumo de arándanos estaría asociado con menor riesgo de síndrome metabólico
The study showed that blueberries may have the potential to reduce a variety of risk factors for metabolic syndrome and cardiovascular disease. Phytochemicals — a type of naturally-occurring antioxidants — are thought to be responsible for the health benefits of blueberries as reported by diabeticlive.com.
Blueberry Consumption Associated with Reduced Risk of Metabolic Syndrome: Fruits have long been recommended as part of a healthy diet, along with vegetables. Aside from providing a healthy, natural boost of energy that is free of the processing and refining that strips nutrition from many of our foods, they contain a variety of compounds and nutrients that afford long-term health benefits. Researchers at the University of Michigan Cardiovascular Center recently conducted a study on blueberries to determine their effect on illnesses such as cardiovascular disease and metabolic syndrome as reported by diabeticlive.com.
The research team at the Cardiovascular Center used rats with a strong predisposition to obesity and diabetes for the study. The rats were divided into two groups; one group was fed a high-fat diet along with blueberry powder, while the other group was fed a low-fat diet with blueberry powder. A control group was fed no blueberries. The study showed that blueberries may have the potential to reduce a variety of risk factors for metabolic syndrome and cardiovascular disease. Phytochemicals — a type of naturally-occurring antioxidants — are thought to be responsible for the health benefits of blueberries. The researchers used freeze-dried blueberries crushed into powder since the rats would not likely have eaten full blueberries. The powder was then mixed in with the rats’ other food; the blueberry mixture accounted for 2% of the rats’ total diet.
The reduction in risk of metabolic syndrome is an important implication for diabetes. Metabolic syndrome is a series of health problems that, when occurring together, increase risk of cardiovascular disease and diabetes. Among the risk factors for metabolic syndrome are raised triglycerides, increased waist circumference (obesity), reduced HDL cholesterol, and increased blood pressure. The blueberry supplements given to the rats in the study appeared to reduce the risk of metabolic syndrome.
The rats had less abdominal fat, lower cholesterol levels, improved insulin sensitivity and fasting glucose, and lower triglyceride levels. They also showed reduced liver size; an enlarged liver is associated with obesity and insulin resistance.
E. Mitchell Seymour, M.S., was the lead researcher on the study. Seymour offered insight as to the mechanism powering the health benefits of the blueberries: “We found by looking at fat muscle tissue, that blueberry intake affected genes related to fat-burning and storage. Looking at muscle tissue, we saw altered genes related to glucose uptake.” According to Steven Bolling, M.D., head of the Cardioprotection Laboratory and heart surgeon at the University of Michigan, “The benefits of eating fruits and vegetables has been well-researched, but our findings in regard to blueberries shows the naturally occurring chemicals they contain, such as anthocyanins, show promise in mitigating these health conditions.”