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Dyslipidemia. Dyslipidemia is when the lipids in your blood are too high or too low. Estimates suggest that 53 percent of adults in the U.S. have lipid abnormalities.. Lipids are a type of fat ...
Possible causes of low cholesterol are: [citation needed] statins; hyperthyroidism, or an overactive thyroid gland; adrenal insufficiency; liver disease; malabsorption (inadequate absorption of nutrients from the intestines), such as in celiac disease; malnutrition; abetalipoproteinemia - a
As with statins, this decrease in intra-hepatic (liver) LDL levels may induce hepatic LDL receptor up-regulation, also decreasing plasma LDL levels. As always, a key issue is how benefits and complications of such agents compare with statins—molecular tools that have been analyzed in large numbers of human research and clinical trials since ...
In addition to plaque formation, LDL-C molecules can undergo oxidation. [1] Oxidation can cause further accumulation of cholesterol and the release of inflammatory cytokines, which damages the blood vessels. [1] [7] Due to the damaging effects of LDL-C, high levels increase the risk for cardiovascular disease and indicate dyslipidemia. [1]
First, hypoproteinemia stimulates protein synthesis in the liver, resulting in the overproduction of low and very-low-density lipoproteins. There is also an increase in the liver synthesis of cholesterol. Second, lipid catabolism is decreased due to lower levels of lipoprotein lipase, the main enzyme involved in lipoprotein breakdown. [13]
Notably, in people who do not have the genetic disorder hypobetalipoproteinemia, a very low cholesterol level (less than 100 mg/dl) may be a marker for poor nutrition, wasting disease, cancer, hyperthyroidism, and liver disease. In 1997 a study showed that Japanese Centenarians had tenfold increase of hypobetalipoproteinemia compared with controls.
In those with loss-of-function variants in both copies of ANGPTL3, low LDL-C, low HDL-C, and low triglycerides are seen ("familial combined hypolipidemia"). [3] Hooft disease is a rare condition evidenced by low blood lipid level, red rash and mental and physical retardation. [citation needed]
Fibrates may decrease LDL, though generally to a lesser degree than statins. Similar to statins, the risk of muscle damage exists. Nicotinic acid, like fibrates, is also well suited for lowering triglycerides by 20–50%. It may also lower LDL by 5–25% and increase HDL by 15–35%. Niacin may cause hyperglycemia and may also cause liver damage.