What does high cholesterol mean

Pro Research Analysisby

Searched over 200M research papers

Analyzed relevant papers

Understanding High Cholesterol: Implications and Risks

What is High Cholesterol?

High cholesterol, also known as hypercholesterolemia, is a condition characterized by elevated levels of cholesterol in the blood. Cholesterol is a waxy, fat-like substance essential for building cell membranes, producing certain hormones, and aiding in fat digestion. However, excessive cholesterol can lead to serious health issues, particularly heart disease 168.

Types of Cholesterol: LDL and HDL

Cholesterol in the blood is carried by lipoproteins, primarily low-density lipoprotein (LDL) and high-density lipoprotein (HDL).

LDL Cholesterol: Often referred to as "bad cholesterol," LDL is associated with the buildup of fatty deposits in the arteries, which can lead to atherosclerosis and increase the risk of heart disease .
HDL Cholesterol: Known as "good cholesterol," HDL helps remove cholesterol from the bloodstream, transporting it to the liver for excretion. Higher levels of HDL are generally considered protective against heart disease .

Health Risks Associated with High Cholesterol

Heart Disease

High levels of total cholesterol, particularly LDL cholesterol, are major risk factors for heart disease, the leading cause of death in the United States. Elevated cholesterol levels can lead to the formation of plaques in the arteries, which can restrict blood flow and result in heart attacks or strokes 24.

Familial Hypercholesterolemia

Familial hypercholesterolemia is an inherited condition that results in extremely high cholesterol levels from a young age. This condition significantly increases the risk of early-onset heart disease due to the body's inability to effectively remove excess cholesterol 68.

Other Health Conditions

Excess cholesterol is also implicated in various other diseases, including liver diseases, diabetes, chronic kidney disease, Alzheimer's disease, osteoporosis, and immune disorders. The toxic effects of cholesterol accumulation in different tissues highlight the importance of maintaining healthy cholesterol levels .

The Paradox of Extremely High HDL Cholesterol

While HDL cholesterol is generally protective, extremely high levels of HDL have been associated with increased risks of cardiovascular disease and mortality. Studies have shown that both very low and very high HDL levels can be detrimental, suggesting a U-shaped relationship between HDL levels and health outcomes 3910.

Monitoring and Managing Cholesterol Levels

Regular cholesterol screening is recommended for adults to identify those at risk for coronary heart disease. Lifestyle changes, such as a healthy diet, regular exercise, and medication, can help manage cholesterol levels and reduce the risk of heart disease .

Conclusion

High cholesterol is a significant health concern due to its association with heart disease and other serious conditions. Understanding the roles of LDL and HDL cholesterol, recognizing the risks of both high and extremely high cholesterol levels, and taking proactive steps to manage cholesterol are crucial for maintaining cardiovascular health and overall well-being.

Sources and full results

Most relevant research papers on this topic

Hypercholesterolemia

High cholesterol levels in the blood increase the risk of developing heart disease.

Highly Cited

2020·

90citations

·S. Martínez-Hervás et al.

Definitions·

DOI

High serum total cholesterol--an indicator for monitoring cholesterol lowering efforts: U.S. adults, 2005-2006.

High serum total cholesterol levels in U.S. adults indicate a potential increased risk for heart disease, and monitoring these levels over time can help identify subgroups where additional prevention efforts may be needed.

2007·

39citations

·S. Schober et al.

NCHS data brief

Association of extremely high levels of high-density lipoprotein cholesterol with cardiovascular mortality in a pooled analysis of 9 cohort studies including 43,407 individuals: The EPOCH-JAPAN study.

Extremely high levels of HDL-C are associated with an increased risk of atherosclerotic cardiovascular disease mortality, particularly in current drinkers.

Meta-AnalysisHighly Cited

2018·

128citations

·A. Hirata et al.

Journal of clinical lipidology·

DOI

Total and high-density lipoprotein cholesterol in adults: National Health and Nutrition Examination Survey, 2011-2012.

High total cholesterol and low HDL cholesterol levels in adults aged 20 and over increased from 2009-2010 to 2011-2012, indicating a need for cholesterol screening.

Highly Cited

2013·

84citations

·M. Carroll et al.

NCHS data brief

High density lipoproteins and arteriosclerosis. Role of cholesterol efflux and reverse cholesterol transport.

HDL cholesterol levels in plasma do not necessarily reflect the efficacy and antiatherogenicity of reverse cholesterol transport, with HDL subclass concentration, lipid mobilization, and metabolism being key determinants.

Highly Cited

2001·

715citations

·A. Eckardstein et al.

Arteriosclerosis, thrombosis, and vascular biology·

DOI

Familial hypercholesterolemia.

Familial hypercholesterolemia is a genetic condition, and if inherited, it increases a person's risk of developing heart disease.

1998·

11citations

·J. L. Guravich et al.

Federation proceedings

Cholesterol-induced toxicity: An integrated view of the role of cholesterol in multiple diseases.

High levels of cholesterol are generally considered to be associated with atherosclerosis. In the past two decades, however, a number of studies have shown that excess cholesterol accumulation in various tissues and organs plays a critical role in the pathogenesis of multiple diseases. Here, we summarize the effects of excess cholesterol on disease pathogenesis, including liver diseases, diabetes, chronic kidney disease, Alzheimer's disease, osteoporosis, osteoarthritis, pituitary-thyroid axis dysfunction, immune disorders, and COVID-19, while proposing that excess cholesterol-induced toxicity is ubiquitous. We believe this concept will help broaden the appreciation of the toxic effect of excess cholesterol, and thus potentially expand the therapeutic use of cholesterol-lowering medications.

Very Rigorous JournalHighly Cited

2021·

265citations

·Yongfeng Song et al.

Cell metabolism·

DOI

Familial Hypercholesterolemia: The Most Common Monogenic Disorder in Humans.

Familial hypercholesterolemia is an inherited condition characterized by high cholesterol levels in the blood, increasing a person's risk of developing heart disease.

Very Rigorous Journal

2020·

14citations

·J. Kastelein et al.

Journal of the American College of Cardiology·

DOI

Association between extremely high-density lipoprotein cholesterol and adverse cardiovascular outcomes: a systematic review and meta-analysis

Extremely high HDL-C levels are associated with elevated risks of all-cause mortality, cardiovascular disease mortality, and stroke compared to normal HDL-C levels.

Meta-Analysis

2023·

12citations

·Guanwei Zhang et al.

Frontiers in Cardiovascular Medicine·

DOI

Extreme high high-density lipoprotein cholesterol is paradoxically associated with high mortality in men and women: two prospective cohort studies

Extreme high HDL cholesterol levels are paradoxically associated with high all-cause mortality in both men and women.

Observational StudyRigorous JournalHighly Cited

2017·

499citations

·C. M. Madsen et al.

European Heart Journal·

DOI

Try another search

what's the difference between a stroke and a heart attack

treatment for cardiomyopathy

lisinopril lip swelling

types of cancer

paralytic stroke

types of emphysema