Cholesterol has been blamed as the primary cause of heart disease. However, modern research shows that cholesterol itself is not the enemy. In fact, it is an essential substance that your body cannot function without.
Cholesterol is required for:
- Building cell membranes
- Producing hormones such as testosterone, estrogen, and cortisol
- Making vitamin D
- Producing bile acids for fat digestion
- Supporting brain and nervous system function
Your liver produces most of the cholesterol your body needs, highlighting its importance for survival.
Cholesterol travels through the bloodstream in particles called lipoproteins.
LDL Cholesterol
LDL is often labeled "bad cholesterol," but it plays important roles, including delivering cholesterol to cells and tissues. Problems arise when LDL particles become elevated alongside factors such as:
- Chronic inflammation
- Insulin resistance
- Smoking
- High blood pressure
- Obesity
HDL Cholesterol
HDL helps transport excess cholesterol back to the liver for recycling and removal.
Inflammation is the real enemy
Heart disease is influenced by more than cholesterol levels alone. Chronic inflammation can damage blood vessels and contribute to plaque formation. Factors such as poor diet, smoking, lack of exercise, and uncontrolled blood sugar often play a significant role.
Extremely low cholesterol levels can negatively affect hormone production and overall health.
References
- 1.Grundy SM et al. Circulation. 2019.
- 2.Ference BA et al. European Heart Journal. 2017.
- 3.Ridker PM et al. New England Journal of Medicine. 2017.
- 4.Dietary Guidelines for Americans 2020–2025.
- 5.Libby P. Nature. 2021.