High triglycerides: what they are, what they tell you and how to lower them

Triglycerides are the fats that circulate in your blood as fuel. More than any other value on the panel, they react to what you ate and drank. When they are high, alcohol, sugar or too little movement are often behind it, and they usually come down within a few weeks once habits change.

Why we test them

Some triglycerides come from food, the rest is made by your liver. It makes more when you eat a lot of sugar or drink alcohol.

That is why they are the most direct window on how your body handles sugar and alcohol. Read together with HDL, they can show that your body is struggling with sugar, often before your glucose rises.

They matter for your heart and arteries too. And when they are very high they can inflame the pancreas: that is why they should be seen by a doctor.

What they tell you, and what they do not

If they are high, the habits of the last few weeks are often behind it: alcohol, sweets, white bread and pasta, little movement. Or the blood test was not fully fasting.

One high number is not enough on its own: triglycerides change a lot from one day to the next, especially with food. If you were not fasting, the test should be repeated before drawing conclusions.

If they are low, it is usually a good sign.

That is why they are read together with other tests:

Normal triglyceride levels

The lab decides what is normal. It is usually 40 to 150 mg/dL, fasting. Your own report may print different limits.

After a meal they rise for a few hours. That is why a result taken without fasting can look higher than it really is.

Within the limits, lower is usually better.

In the Rosa report you also see your optimal range and what to do to reach it or stay in it.

What your result means

Find the row for your result, in mg/dL. Which values are dangerous? From 500 up they should always be seen by a doctor, and above 880 without waiting.

If your triglycerides are high or low

What causes high triglycerides

Often there is more than one at once, and many of them can be changed. But first check that your blood test was fasting: a meal in the hours before is enough to raise them.

Symptoms of high triglycerides

Usually none, even when they are high. They are almost always found by chance, on a blood test.

Only at very high levels can small yellow bumps appear on the skin, or severe pain in the belly if the pancreas becomes inflamed. Pain like that needs to be seen at once, at the emergency department.

Low triglycerides: what it means

Usually nothing to worry about. Low triglycerides often go with a healthy metabolism, and if you feel well there is nothing to do.

Very low levels are rarer. They can come from a diet with very little fat, from eating too little, from a gut that absorbs fat poorly or from an overactive thyroid. If you have lost weight without trying, talk to your doctor.

How to lower your triglycerides

They usually come down when habits change, and they respond within a few weeks. Where to start:

What can skew the result

They are the value on the panel most affected by what you ate and drank. It helps to know this before you read it.

When to worry

Talk to a doctor if:

With Rosa, triglycerides of 500 or more are always flagged to a doctor, and above 880 urgently.

Frequently asked questions

What are triglycerides? They are the form in which your body carries and stores fat. It uses them as fuel between meals and puts the extra aside.

What are normal triglyceride levels? Usually 40 to 150 mg/dL fasting, but the limit printed on your own report is what counts. From 500 up they should always be seen by a doctor.

Do I need to fast for a triglyceride test? Yes, it is better. You are usually asked not to eat from the evening before and to avoid alcohol in the days before. You can drink water.

What does the triglyceride to HDL ratio tell you? It is a simple way to read the two numbers together: triglycerides divided by HDL cholesterol. The higher it is, the more likely your body is struggling with sugar (insulin resistance). It often rises before glucose does.

How long does it take to lower triglycerides? They respond fast: with less alcohol and sugar and more movement, they usually come down within a few weeks. If they are very high, your doctor decides the timing and the treatment.

How often should they be checked? For people who feel well there is no fixed rule: Rosa measures them twice a year. If they are out of range, they are usually checked again after about three months, or sooner if your doctor says so.

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