system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How does 'Oat fibre help lower cholesterol'?
gpt
Oat fiber can adsorb *some* of the cholesterol in your gut so that you don't absorb it into your blood stream. This would only effect  the cholesterol that you eat which is a small fraction of the total cholesterol in your body and blood. Serum cholesterol levels are more strongly influenced by the overall calorigenicity of your diet, refined carbs and sugars, than the animal products that contain cholesterol.

Your liver can manufacture more cholesterol in a day than you can possibly cram into your face in a month. "Oat bran can lower blood cholesterol levels" is largely marketing bullshit. Relying on your Honey Nut Cheerios to alter your serum cholesterol levels is a fool's game.