I’m eating my overnight oats and just am wondering what is the actual mechanism of oatmeal that reduces lipids in blood.
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Oil doesn’t mix with water, but your body needs to pull oil out of the food you eat and is made of mostly water. So the top of your small intestine adds a natural detergent called bile to help the oil and water in whatever you ate mix. Bile contains cholesterol, so you would constantly be losing cholesterol that way, but cholesterol is essential for life and is hard to make more of, so most of what’s lost in your bile is reabsorbed lower down in your intestines.
Oatmeal is full of fiber, and that fiber can trap the cholesterol from your bile and keep some of it from being reabsorbed. With less cholesterol available, your liver doesn’t package as much of it into lipoprotein particles, and your LDL-C goes down (there’s some debate about whether this is a good thing or not).
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