Understanding Low Triglycerides: Causes, Symptoms, and Next Steps

Learn about low triglycerides, their causes, symptoms, and when to consult a doctor.

Full guide: Triglycerides

Aug 1, 2026How we prepare texts 3 min read

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Triglycerides are a type of fat found in your blood. They provide your body with energy and are an important indicator of your metabolic health. While much focus is often placed on high triglyceride levels, low triglycerides can also be significant. Understanding the causes and implications of low triglycerides can help you maintain better health.

What are triglycerides?

Triglycerides are a form of lipid, or fat, that circulates in your bloodstream. When you eat, any calories not used immediately are converted into triglycerides and stored in fat cells. Later, hormones release these triglycerides for energy between meals. In adults, a typical range for triglycerides is between 40 to 150 mg/dL. Fasting levels below 150 mg/dL are considered optimal, with levels below 100 mg/dL being ideal.

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Causes of low triglycerides

Low triglyceride levels can be caused by several factors, including:

  • Malnutrition: Insufficient intake of calories and nutrients can lead to low triglycerides.
  • Hyperthyroidism: An overactive thyroid can increase metabolism and lower triglyceride levels.
  • Malabsorption syndromes: Conditions like celiac disease can affect nutrient absorption, leading to low triglycerides.
  • Genetic factors: Some inherited conditions can result in low triglyceride levels.
  • Certain medications: Drugs like fibrates and nicotinic acid, used to lower high triglycerides, can sometimes lower them too much.

Symptoms of low triglycerides

Low triglycerides themselves often do not cause symptoms. However, the underlying conditions causing low triglycerides might lead to various symptoms, such as fatigue, weight loss, or digestive issues. Identifying these symptoms with the help of a healthcare professional is important for proper diagnosis and treatment.

How to read your triglyceride test results

When you receive your triglyceride test results, it is important to compare them to the typical range of 40 to 150 mg/dL. If your fasting triglyceride level is below 150 mg/dL, it is considered optimal. Levels below 100 mg/dL are ideal. If your levels are lower than the typical range, it might be worth discussing with your doctor, especially if you have any related symptoms.

Frequently asked questions

What is considered a low triglyceride level? A triglyceride level below 40 mg/dL is generally considered low. It is important to discuss this with your healthcare provider to understand the underlying cause.

Can low triglycerides be harmful? While low triglycerides are not typically harmful by themselves, they may indicate other health issues like hyperthyroidism or malnutrition that need attention.

How can I raise my triglyceride levels? To raise triglyceride levels, you may need to address the underlying cause. This could involve dietary changes, treating a thyroid condition, or adjusting medications. Always consult with a healthcare provider before making changes.

What should I eat if I have low triglycerides? A balanced diet with sufficient calories and healthy fats can help maintain normal triglyceride levels. Regular meals with enough overall calories, along with healthy sources of carbohydrates and proteins, support a normal level. Omega-3 fatty acids from fish are good for the heart but tend to lower triglycerides rather than raise them.

Do low triglycerides affect cholesterol levels? Triglycerides and cholesterol are both lipids, but they serve different functions. Low triglycerides do not directly affect cholesterol levels but can be part of a broader lipid profile that your doctor will evaluate.

When to see a doctor

If your triglyceride levels are significantly below the typical range of 40 to 150 mg/dL, or if you experience symptoms like unexplained weight loss, fatigue, or digestive issues, it is advisable to consult a healthcare provider. They can help determine the underlying cause and recommend appropriate treatment.

Remember, this information is not a substitute for professional medical advice. Always discuss your health decisions with your clinician.

Triglycerides: more on this topic

Test page What it measures, normal range, what moves it

Conditions where this test is key

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