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The deadly quartet. Upper-body obesity, glucose intolerance, hypertriglyceridemia, and hypertension
1Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas 75235-9030.
Insights
Upper-body obesity, even without overall obesity, significantly increases cardiovascular risk by causing hypertension, diabetes, and hypertriglyceridemia through hyperinsulinemia. Identifying and preventing this specific fat distribution is crucial for cardiovascular health.
Area of Science:
- Cardiovascular Medicine
- Endocrinology
- Metabolic Syndrome
Background:
- Obesity is a known cardiovascular risk factor, but the specific contribution of upper-body fat distribution is often underestimated.
- Hypertension, diabetes, and hypertriglyceridemia are key components of metabolic syndrome and major cardiovascular risk factors.
- The interplay between obesity, hormonal factors (androgens), and metabolic dysfunction requires further elucidation.
Purpose of the Study:
- To examine the evidence linking upper-body obesity to cardiovascular risk factors.
- To investigate the mediating role of hyperinsulinemia in upper-body obesity-related metabolic dysfunction.
- To highlight the need for targeted prevention and management strategies for upper-body obesity.
Main Methods:
- Review of existing scientific literature and clinical studies.
- Analysis of the pathophysiological mechanisms connecting caloric excess, androgens, and hyperinsulinemia.
- Examination of the relationship between upper-body fat distribution and metabolic abnormalities.
Main Results:
- Upper-body obesity is strongly associated with hypertension, diabetes, and hypertriglyceridemia, even in individuals without overall obesity.
- Hyperinsulinemia is identified as a key mediator linking upper-body obesity to these adverse metabolic conditions.
- Caloric excess, often influenced by androgens, is a primary driver of upper-body fat accumulation.
Conclusions:
- Upper-body obesity represents a significant and often overlooked contributor to cardiovascular risk.
- Effective management requires strategies that address this specific fat distribution and its metabolic consequences, particularly hyperinsulinemia.
- Preventing upper-body obesity or managing its associated conditions without exacerbating hyperinsulinemia is essential for cardiovascular health.
Abstract:
The contribution of obesity to cardiovascular risk has not been adequately appreciated because of a failure to recognize the involvement of upper-body predominance of body weight with hypertension, diabetes, and hypertriglyceridemia even in the absence of significant overall obesity. This article examines the evidence that upper-body obesity, as usually induced by caloric excess in the presence of androgens, mediates these problems by way of hyperinsulinemia. Because of these interrelationships, there is a need to identify and prevent upper-body obesity or, failing that, to provide therapies that will control the associated problems without aggravating hyperinsulinemia.