An older scientific name for cholesterol, referring to the fatty substance found in animal tissues and blood.
From Greek 'chole' (bile) + 'stereos' (solid) + '-in' (chemical suffix). This was the original term used in the 1700s before it was renamed cholesterol in the 1800s.
Scientists originally thought cholesterin was only found in bile (hence the 'chole' prefix), but later realized it's in every cell in your body—it's actually crucial for making cell membranes and hormones!
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