How does kale's dietary fiber content help lower overall blood levels of LDL cholesterol?

It binds with bile acids in the digestive tract, encouraging the body to use existing cholesterol.

Kale provides a substantial benefit to cardiovascular health, partly through its significant fiber content, which interacts actively within the digestive system. Dietary fiber acts by binding to bile acids that are present in the digestive tract. Since bile acids are synthesized using cholesterol, this binding action effectively traps them, preventing their reabsorption. Consequently, the body is compelled to draw upon existing cholesterol reserves circulating in the bloodstream to synthesize replacement bile acids. This sustained process leads to a reduction in the overall levels of LDL, often referred to as 'bad' cholesterol.