Hard Belly lipohypertrophy
May 6, 2008
Hello Dr Pierone,
Since the lipodystrophy forum is inactive, is this forum open to discussing types of lipodystrophy other than facial wasting?
I'm finding very mixed information as to what causes "Hard Belly" lipo-hyperatrophy in long term HIV sufferers...
Just to clarify, I'm not talking about the soft-fat lipo-hyperatrophy that is most likely an effect of feeling better (on treatment) and thus eating better (more?).
I'm talking about that hard extended belly look. I've seen this condition in both the low-body-fat-% set("muscle queens") AND the high-body-fat-% set, which leads me to believe that it's not really subcutaneous (skin right?) fat at all?
I have observed that "hard belly" IS more common on those people that are taking Human Growth Hormone (HGH). I don't know if that is a causative effect of the HGH, or just the fact that since HGH has a tendency to cause bone growth (aka "big head") the general "proportions" just tend to highlight the hard belly more?
One belief that I latched onto was that this hard-belly effect is an accumulation of saturated fats on the organs? Primarily the liver? Do you put any scientific/experience based stock in this "belief"?
THANKS AGAIN! -Zac
Response from Dr. Pierone
Lipohypertrophy is the accumulation of visceral fat and is most closely linked to use of protease inhibitors. This intra-abdominal fat is located around the viscera, but most patients also have fatty infiltration of the liver as well. This pattern of fat accumulation is also linked to lipid disturbances and diabetes mellitus. The hallmark of lipohypertrophy is abdominal protuberance because of outward pressure of the fat pushing the abdominal wall forward.
This fat accumulation pattern is not unique as an HIV medication-related side effect. Genetics, diet, and physical activity play a role as well. If one goes to a Sonny's Fat Boy Barbecue restaurant (popular here in Florida) parking lot and simply observes the body contours of the patrons one will find many examples of "hard body extended belly" look with the pants belt fastened very low over the hips to allow room for the large abdominal belly fat complex to breathe.
Human growth hormone can be used to treat lipohypertrophy and this probably explains why you have noticed more people with lipohypertrophy taking this agent.
I hope this information helps and best of luck!
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