Lowering Triglyceride Levels By What Mechanism Does Dietary Fibre Reduce The Levels Of LDL And Triglycerides Within The Blood?

By what mechanism does dietary fibre reduce the levels of LDL and triglycerides within the blood? - lowering triglyceride levels

I understand that the short chain fatty acid (a product of the fermentation of fiber in the colon to suppress) the synthesis of cholesterol in the liver, lowering LDL and triglycerides.

How to reduce levels of LDL and triglycerides fiber?