Obesity and its effect on heart

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Weight increases risk for abnormal heart function and the other cardiovascular risk factors.

When it comes into the relationship between obesity and the heart failure for it’s complicated. Obesity is intimately intertwined with the multiple health conditions that which underlie the cardiovascular disease including the high blood pressure, diabetes, and abnormal blood cholesterol. In addition with that the weight gain is a frequent consequence of heart-damaging lifestyle choices such as the lack of exercise and a fat-laden diet.

For some time, the scientists have to be suspected that for the excess fat tissue, especially around the waist, has a direct effect on the heart structure and the function, even in the absence of other heart disease risks. To pursue this theory, it has evaluated 950 older individuals of varying weights for the signs of left ventricular (LV) diastolic dysfunction. This condition is characterized by the changes to the structure for heart’s main pumping chamber (left ventricle), which will prevent it from filling sufficiently between the beats. Although LV diastolic dysfunction can often be symptom less, it reliably predicts future heart failure.

The study subjects are   divided into three weight groups—normal, overweight, and obese—based on their body mass index (BMI), a mathematical formula that calculates body fat based on height and weight. In accordance with the standard definitions, a BMI below 25 was considered as normal weight; BMI of 25 to 29.9, overweight; and BMI 30 or above, is obese.

Each subject will underwent a noninvasive echo cardiogram exam to measure the dimensions of the heart, muscle thickness, and filling capacity of the left ventricle. Upon analyzing the results of the researchers they found that the overweight and obese participants were more prone to abnormal diastolic function than which the normal weight has individuals. Unsurprisingly, these individuals were also more likely to have the other cardiovascular risks such as high blood pressure, diabetes, and a larger heart mass. However, when the researchers controlled for the effects of the other risks, the overweight and obese subject will still had up to a 60% of higher chance of having LV diastolic dysfunction. It can be made a difference that how much extra body fat the person will be carried. The risk of the abnormal heart function went up to 4% for each point which increase in BMI measurement.

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