The relationship between obesity and hypogonadism is complicated. The relationship is bidirectional and there are numerous causative and correlative factors on both sides of the equation. Obesity is increasing in prevalence in epidemic proportions. Likewise, we are beginning to see the rapid increase in the incidence of male hypogonadism. It is only recently that we are learning the ways in which these 2 conditions exacerbate each other, and we are only beginning to understand how by treating one of these conditions, we can help to treat the other as well.
It is only recently that we are learning the ways in which these 2 conditions exacerbate each other.
It is only recently that we are learning the ways in which these 2 conditions exacerbate each other.
Clearly the relationship between hypogonadism and obesity is complicated and questions remain surrounding the degree of correlation and causality between the 2 conditions. What is known is that these 2 conditions have been discovered to coexist with frequency and treatment of one of these conditions may confer potential benefits on the other. There are numerous speculations as to the physiology behind these mechanisms.
Over the years, we have also come to understand that the function of adipose tissue is largely determined by its location. Visceral adipose tissue secretes its endocrine hormones directly into the portal system, whereas subcutaneous tissue secretes into systemic circulation. Hence, visceral adiposity has a greater effect on hepatic metabolic function. Expression of IL-6 is higher in visceral adipose tissue, whereas expression of leptin is higher in subcutaneous tissue. Finally, these different types of tissue respond differently to afferent signals, largely because visceral tissue has higher levels of glucocorticoid and androgen receptors. Most interesting, however, is that visceral fat is associated with increased metabolic risk and mortality, whereas subcutaneous fat expansion actually improves insulin sensitivity, and reduces the risk of type 2 diabetes.
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