Triglycerides: What Drives Them Up and Down

Triglycerides are the fat the body uses to move and store energy. After a meal, the liver packages extra calories, especially from carbohydrate and alcohol, into triglyceride and ships it out in particles to be stored or burned. When the level runs high, it usually means the liver is being handed more fuel than the body can use.

What pushes them up

Refined carbohydrate is the biggest driver for most people. Sugar, white flour, juice and soda arrive fast, and whatever the muscles and liver cannot store as glycogen gets converted to fat and sent out as triglyceride. Fructose in large amounts lands mostly in the liver, which is why sweetened drinks move this number so reliably.

Alcohol does the same thing by a different route. The liver prioritizes clearing alcohol, and while it does, fat production rises and fat burning stalls. Two or three drinks a night can keep triglycerides elevated on their own.

Insulin resistance ties it together. When cells stop responding well to insulin, fat tissue releases fatty acids it should be holding, the liver makes more triglyceride, and the enzyme that clears triglyceride from the blood works less well. A triglyceride level above 150 paired with a low HDL is often the first visible sign of insulin resistance, years before fasting glucose moves. That pairing is one reason we check fasting insulin alongside the lipid panel.

Lack of movement, fat around the organs, an underactive thyroid and some medications round out the list.

Fasting or not

Triglycerides are the one lipid that changes a lot with a meal. After a fatty meal they can roughly double, and they stay up for six to eight hours. A non fasting draw is fine for a general screen, but if the number comes back high we repeat it after a 10 to 12 hour fast before drawing conclusions.

The target, and why they fall fast

The standard lab range calls under 150 normal. We aim for under 100 in members we treat, because risk keeps falling below 150 and because a level under 100 with a healthy HDL usually means insulin is working. Below that, ApoB tells us more about particle count than triglycerides do.

The encouraging part is how quickly they respond. Triglycerides turn over in hours, not months, so they reflect the last few weeks rather than the last few years. Cutting sweetened drinks and alcohol, matching carbohydrate to training, adding resistance work and losing some body fat can cut them by roughly 20 to 50 percent within weeks. Omega 3 fats lower them further, roughly 20 to 30 percent at about 4 grams a day of EPA and DHA.

Unless it is over about 500, where pancreatitis becomes a risk, a high triglyceride is rarely the problem itself. It is the signal that fuel is arriving faster than it is being used. That's why we check it, and why we look at insulin with it.

This article is educational and is not medical advice.

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