cholesterol
[U] Uncountable
This term is primarily used in medical and health contexts to describe a lipid that is necessary for building cell membranes and producing hormones. It carries a heavy association with cardiovascular risk, often triggering anxiety or a sense of urgency regarding diet and exercise when mentioned in a clinical setting. In common parlance, the word is frequently used as a shorthand for the overall health of one's arteries. While it is a neutral biological molecule, the conversational tone usually shifts toward the negative when discussing high levels, linking the word to concepts of blockage, heart disease, and aging.
Used as a mass noun to describe the chemical substance in the blood, such as when a patient has high cholesterol.