Niacin, also known as vitamin B3, is a nutrient that plays a vital role in our body. It helps convert the food we eat into energy by using fats and proteins. It’s also essential for keeping our nervous system, digestive system, and skin healthy. But how does it interact with cholesterol? Let’s delve into this.
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Niacin has long been used to lower triglycerides and increase high-density lipoprotein (HDL) cholesterol, often referred to as the “good” cholesterol. This is because HDL cholesterol helps remove low-density lipoprotein (LDL) cholesterol, the “bad” cholesterol, from the bloodstream.

Niacin works by blocking the enzyme responsible for making cholesterol in the liver. This action helps lower the levels of LDL cholesterol and triglycerides in the blood. At the same time, niacin prevents the removal of HDL cholesterol by liver cells, allowing the body to retain more of this beneficial substance.
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When taken at prescription-level doses, niacin can lower triglycerides by 25% and raise HDL cholesterol by more than 30%. Triglyceride levels over 150 milligrams per deciliter (mg/dL) or 1.7 millimoles per liter (mmol/L) have been associated with a higher risk of heart disease. The risk of heart disease is also increased in men who have HDL levels below 40 mg/dL (1.0 mmol/L) and in women who have HDL levels below 50 mg/dL (1.3 mmol/L).
However, it’s important to note that while niacin can help improve all lipoprotein levels, it may not reduce the risk of heart attack or stroke. Therefore, some doctors may not recommend niacin as an alternative to other cholesterol-lowering drugs.
Moreover, niacin can cause side effects when taken in high doses. These can include severe skin flushing combined with dizziness, nausea, vomiting, and diarrhea. Therefore, it’s advisable to consult a physician before taking any niacin supplements.
In conclusion, while niacin does have the ability to remove cholesterol from the body, its effectiveness and safety can vary depending on the individual and the dosage used. As always, it’s important to consult with a healthcare provider before starting any new supplement regimen.
Remember, maintaining a balanced diet, regular exercise, and a healthy lifestyle are key to supporting overall health, including cardiovascular health.


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