Lipids are fatty substances in the blood, and include cholesterol and triglycerides. All lipids play important roles throughout the body, but abnormal levels in the blood can cause problems. High levels of lipids may be caused by one or a combination of:
- Diet that has excess calories, usually higher in carbohydrates and fat
- Sedentary lifestyle
High levels of lipids in the blood can contribute to a buildup of plaque in the inside walls of the blood vessels. This build up causes a thickening and hardening of the blood vessel walls known as atherosclerosis. The damaged blood vessels make it difficult for blood to flow freely and in some cases can cause a blockage of blood flow. If the blockage occurs in the heart or brain it can lead to a heart attack or stroke.
SOURCE: http://www.lahey.org/Tags: Comorbidity