Help me: why the renal failure restrain lipid intake? Normlly lipid should not be found in urine?

Question

I know these 2 questions are stupid but I really stuck here and can not move on...............

Answer 1

Renal failure can cause LIPID disturbances which can be a significant risk factor for cardiovascular complications. Hypertriglyceridemia is the major lipid
abnormality in the course of chronic renal failure and increased cholesterol level is also common. A lipid droplet in ailing glumeruli could possibly lead to other complications.

That's right, lipids are not normally found in urine.

For more details you may check out this link:
http://www.amb.edu.pl/roczniki/roczniki_2004/volumes/vol49_04/24/24-Rutkowski_Lipid.pdf