Both too much or too little high-density lipoprotein (HDL) cholesterol — the “good” kind — could create a small increased risk for dementia in older adults.

Source: https://www.deseret.com/2023/10/7/23906670/can-dads-get-postpartum-depression-what-illnesses-precede-diabetes

The mean low-density lipoprotein (LDL) cholesterol level was 139.0 mg/dL in both groups at baseline.

Source: https://www.gjsentinel.com/lifestyle/health_and_wellness/acc-bempedoic-acid-cuts-cardiovascular-event-risk-in-statin-intolerant/article_3ce54eb4-d009-5b63-bb15-bc301b78b383.html

When cholesterol combines with protein to be carried in the blood, it is known as a lipoprotein.

Source: https://www.thescottishsun.co.uk/health/10491915/high-cholesterol-silent-killer-heart-disease/