Diterpenes such as cafestol and kahweol are both present in the oil contained within the coffee bean, and these can increase your total cholesterol and LDL levels. (mindbodygreen.com)
While 73 mg of purified cafestol a day for six weeks can increase cholesterol by a worrisome 66 mg / dL, the average cup of French press coffee contains between 3 - 6 mg; 73 mg isn't a normal physiological dose. (wp.med4health.com)
Conventional wisdom is scared of those oils because they contain two lipid compounds called cafestol (great name for a coffee shop) and kahweol, high doses of which elevate cholesterol and suppress LDL clearance from animal models. (wp.med4health.com)