Editing Combined hyperlipidemia (section)

==Diagnosis==
=== Types ===
The two forms of this [[lipid]] disorder are:
* Familial combined hyperlipidemia (FCH) is the familial occurrence of this disorder, probably caused by decreased LDL receptor and increased ApoB.
* Acquired combined hyperlipidemia is extremely common in patients who have other diseases from the [[metabolic syndrome]] ("syndrome X", incorporating [[diabetes mellitus type II]], [[hypertension]], [[central obesity]] and CH). Excessive [[free fatty acid]] production by various tissues leads to increased VLDL synthesis by the [[liver]]. Initially, most VLDL is converted into LDL until this mechanism is saturated, after which VLDL levels elevate.