ISSA Nutritionist Practice Exam

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Study for the ISSA Nutritionist Exam with our comprehensive quiz. Featuring multiple choice questions, hints, and detailed explanations, you'll prepare effectively for your certification!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the potential effect of soluble fiber on cholesterol levels?

It raises cholesterol levels
It has no effect on cholesterol levels
It lowers cholesterol levels
It increases LDL cholesterol

The correct answer is: It lowers cholesterol levels

Soluble fiber is known for its beneficial effects on cholesterol levels, particularly lowering total and LDL (low-density lipoprotein) cholesterol. The mechanism behind this involves the way soluble fiber interacts with bile acids in the digestive system. When soluble fiber is ingested, it forms a gel-like substance that can bind to bile acids, which are made from cholesterol. As the body works to replace the bile acids that are lost due to this binding, it pulls cholesterol from the bloodstream to do so. Consequently, this process can lead to a reduction in overall cholesterol levels, particularly LDL cholesterol, which is often referred to as "bad" cholesterol due to its association with an increased risk of heart disease when levels are elevated. In summary, soluble fiber effectively aids in lowering cholesterol levels through its interaction with bile acids, leading to a decreased concentration of cholesterol in the bloodstream.