Hi Michelle,
Hyperlipidemia is basically a high level of fat in your blood. This could be a high total cholesterol, high LDL cholesterol, or high triglyceride level.
Review the information in this link as it provides information about lipids/cholesterol levels from the American Heart Association. I am not sure what his physician means about "undisclosed liver disorder". Talk to his physician about the details of his diagnosis so that you can better understand what everything means and what the next steps may be.
Best Regards,
Karen McPartland, RD
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