Cholesterol is a subcategory of lipids called steroids. This is part of the cell membrane and is used to synthesize some of the human sex and other hormones.

Cholesterol is insoluble in blood and is transported by molecules called lipoproteins.
There are two types of lipoproteins:  high density (HDL) and low density (LDL).
HDL known as “good cholesterol” [...]

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