Just want to add that overuse of orals and any subsequent damage to liver and kidneys is another reason why LDL levels might be raised. The long term issue here would be long term damage caused by the orals, not the cholesterol. Fortunately the liver is very effective at self repair, within reason.

Something else to bear in mind is homeostasis. The bodies ability to return back to its preferred state. That suggests to me that any change in cholesterol levels or raise in blood pressure due to steroid or oral use unless completely abused over a long period of time will have a limited detrimental effect.

Bottom line is keep it short and get back normal before doing it again.