Why Are My Triglycerides High? A Functional Medicine Perspective

You get your bloodwork back and most of it looks pretty good—until you get to your triglycerides.

They’re high.

Maybe your total cholesterol isn’t particularly alarming. Maybe your fasting glucose is still technically “normal.” Maybe nobody has ever mentioned insulin resistance to you.

So why are your triglycerides elevated?

From a functional medicine perspective, I don't look at triglycerides as an isolated number. I want to understand why your body is making or carrying more triglycerides in the first place.

Elevated triglycerides can be one of the earlier clues that something is changing metabolically, particularly when they occur alongside increasing fasting insulin, blood sugar changes, abdominal weight gain, fatty liver, low HDL cholesterol, or other signs of insulin resistance.

And sometimes the reason is hiding somewhere you wouldn't immediately expect.

What Are Triglycerides?

Triglycerides are a type of fat found in your blood.

After you eat, your body can package excess energy into triglycerides for storage and transport. Your liver also produces triglycerides and releases them in particles called very-low-density lipoproteins, or VLDL.

Having triglycerides in your bloodstream is completely normal.

The problem is when they remain elevated.

A triglyceride level below 150 mg/dL is generally considered within the conventional normal range. But I don't stop at asking whether a number has crossed a laboratory cutoff. I look at triglycerides alongside the rest of the metabolic picture.

That includes glucose, insulin, HDL, LDL and other lipid markers, liver enzymes, thyroid function, blood pressure, waist circumference, lifestyle, medications, and family history.

One number rarely tells the whole story.

Why Are My Triglycerides High?

There isn't one answer.

Elevated triglycerides can be associated with insulin resistance and poorly controlled diabetes, diets high in added sugars or refined carbohydrates, excess alcohol, sedentary behavior, hypothyroidism, kidney or liver disease, certain medications, excess body fat, and genetic lipid disorders.

That's why simply being told to “eat less fat” may completely miss what is actually driving the problem.

1. Insulin Resistance

One of the first things I think about when I see elevate

d triglycerides is insulin resistance.

Insulin helps move glucose from your bloodstream into your cells. When cells become less responsive to insulin, the pancreas often compensates by producing more of it.

This can happen for quite some time before fasting glucose or A1C reaches the diabetic range.

Meanwhile, changes in insulin signaling and an increased supply of fatty acids to the liver can encourage the liver to produce and export more triglyceride-rich VLDL.

This is why someone can have a “normal” glucose result and still have metabolic dysfunction developing underneath the surface.

Some clues I look for include:

• Elevated fasting insulin

• Increasing fasting glucose or A1C

• Elevated triglycerides

• Low HDL cholesterol

• Abdominal weight gain

• Fatty liver

• Elevated blood pressure

• Strong carbohydrate or sugar cravings

• Energy crashes after meals

None of these individually diagnoses insulin resistance, but together they can tell a much more interesting story than fasting glucose alone.

2. Too Much Sugar and Refined Carbohydrate

People often assume high triglycerides mean they're eating too much dietary fat.

Not necessarily.

Excess added sugar and highly refined carbohydrates can contribute significantly to elevated triglycerides, particularly in someone who already has insulin resistance.

Think about foods such as sugary drinks, sweetened coffee, desserts, candy, pastries, white bread, highly refined cereals, and other rapidly digested carbohydrates.

When more carbohydrate is coming in than the body needs for immediate energy and storage, the liver can convert some of that excess carbohydrate into fatty acids through a process called de novo lipogenesis.

Those fats can then be packaged into triglycerides.

So if your triglycerides are elevated, looking only at how much fat you're eating may mean you're looking in the wrong direction.

3. Alcohol May Be Playing a Bigger Role Than You Think

Alcohol is another common contributor that sometimes gets overlooked.

You don't necessarily have to consider yourself a heavy drinker for alcohol to affect your triglycerides. Individual responses vary considerably, particularly in people who already have insulin resistance or elevated triglycerides.

If someone's triglycerides are unexpectedly high, I often want to know what happens when alcohol is significantly reduced or removed for a period of time.

Wine still counts.

So does the weekend cocktail.

Your liver does not give Pinot Noir a health halo because it came with dinner.

4. Your Liver Matters

Your liver plays a central role in regulating triglycerides.

This is one reason elevated triglycerides and metabolic dysfunction-associated steatotic liver disease—commonly called fatty liver—frequently show up together.

When I see elevated triglycerides alongside increasing ALT, AST or GGT, insulin resistance, abdominal weight gain, or abnormal glucose markers, liver and metabolic health deserve a closer look.

The goal isn't to “detox” the liver with a cleanse.

It's to understand why fat is accumulating and address the metabolic environment contributing to it.

5. Don't Forget the Thyroid

Low thyroid function can affect lipid metabolism.

Uncontrolled hypothyroidism is a recognized secondary cause of elevated triglycerides, which is why thyroid function should be considered when triglycerides are unexpectedly elevated.

Rather than looking at a lipid panel completely separately from the rest of the endocrine system, I like to look at the entire picture.

Depending on the individual, that may include TSH and appropriate additional thyroid testing based on symptoms and medical history.

If someone also has fatigue, constipation, feeling cold, dry skin, hair changes, unexplained weight changes, or other thyroid-related symptoms, this becomes even more relevant.

6. Medications Can Raise Triglycerides Too

Sometimes the explanation is sitting in the medication list.

Certain medications can contribute to elevated triglycerides, including some corticosteroids, oral estrogens, beta blockers, diuretics, retinoids, immunosuppressants, and certain psychiatric medications.

That doesn't mean you should stop a medication because your triglycerides increased.

It means the medication history should be part of the conversation.

If a medication could be contributing, discuss the risks, benefits, alternatives, and appropriate monitoring with the prescribing clinician.

7. Genetics Still Matter

You can eat beautifully, exercise regularly, and still have abnormal triglycerides.

Genetics can influence how your body produces, transports, and clears triglyceride-rich particles.

This becomes especially important when triglycerides are very high, have been elevated from a young age, don't respond as expected to lifestyle changes, or there is a strong family history of lipid disorders, premature cardiovascular disease, or pancreatitis.

Functional medicine should never mean assuming every abnormal laboratory value is caused by lifestyle.

Sometimes genetics are a major part of the story.

The Triglyceride-to-HDL Ratio: Another Clue

One number I often look at alongside triglycerides is HDL cholesterol.

When triglycerides are elevated and HDL is low, it can be another clue that insulin resistance or metabolic dysfunction may be present.

The triglyceride-to-HDL ratio can provide additional context, but it should not be treated as a standalone diagnostic test.

I use it as one piece of the puzzle.

What Labs Would I Look at From a Functional Medicine Perspective?

If triglycerides are elevated, I usually want more information than triglycerides alone.

Depending on the person, I may consider:

• Fasting lipid panel

• Fasting glucose

• Fasting insulin

• Hemoglobin A1C

• Comprehensive metabolic panel

• ALT, AST and GGT

• Thyroid testing

• Blood pressure

• Waist circumference and body-composition changes

In selected patients, additional cardiovascular markers such as ApoB may also help clarify the number of atherogenic lipoprotein particles present.

The appropriate testing depends on the person's history, medications, symptoms, family history, and overall cardiovascular risk.

The goal isn't to order every lab available.

It's to order the labs that answer a useful question.

What Can You Do to Lower Triglycerides?

The best approach depends on why they're elevated.

For many people with mild-to-moderately elevated triglycerides, the biggest opportunities are improving insulin sensitivity and overall metabolic health.

Reduce Added Sugar and Refined Carbohydrates

Start with the carbohydrates that provide very little nutritional value.

Sugary beverages, sweetened coffee drinks, candy, baked goods, desserts, and heavily refined carbohydrates are good places to look first.

This does not mean carbohydrates are inherently bad.

Whole-food carbohydrates such as vegetables, fruit, beans, legumes, and appropriately portioned whole grains can absolutely be part of a metabolically healthy diet.

Context matters.

Prioritize Protein

Protein helps create more satisfying meals and supports lean muscle mass.

Eggs, fish, poultry, lean meats, Greek yogurt, cottage cheese, seafood, and other quality protein sources can make it easier to build balanced meals without relying heavily on refined carbohydrates.

I generally like to see a meaningful source of protein at each meal rather than saving most of the day's protein for dinner.

Increase Fiber

Vegetables, berries, beans, legumes, nuts, seeds, and minimally processed whole grains provide fiber and can replace many of the refined carbohydrates that tend to dominate a typical diet.

Don't just think about what you need to remove.

Think about what you're replacing it with.

Eat Omega-3-Rich Fish

Fatty fish such as salmon, sardines, mackerel, and trout provide EPA and DHA omega-3 fatty acids.

Prescription-strength omega-3 therapy is also used in certain patients with elevated triglycerides, but that's different from simply taking a random fish-oil supplement from the grocery store.

If triglycerides are significantly elevated, supplement dosing and medication decisions should be discussed with the appropriate healthcare professional.

Build Muscle

Muscle is metabolically active tissue and plays an important role in glucose disposal and insulin sensitivity.

Walking is wonderful, but I also want people thinking about resistance training.

Weights, resistance bands, body-weight exercises, Pilates, and other forms of strength training can all contribute.

And one of the simplest habits?

Take a walk after meals.

It doesn't have to be complicated to be useful.

Take an Honest Look at Alcohol

If triglycerides are elevated, try significantly reducing or eliminating alcohol and then recheck the numbers.

The laboratory results may give you a much clearer answer than debating whether your current intake is “too much.”

Improve Sleep

Poor sleep can make glucose regulation, appetite, food choices, stress hormones, and metabolic health harder to manage.

If someone is doing everything “right” with food but sleeping five hours a night, I'm not ignoring the sleep piece.

And if you're sleeping for plenty of hours but waking exhausted, snoring, or struggling with daytime sleepiness, sleep apnea deserves consideration.

Dr. Stephanie's Tip: If your triglycerides are high, don't look at them by themselves. Pull out your last few years of bloodwork and look at the trend.

Are triglycerides slowly climbing?

Is HDL dropping?

Has fasting glucose moved from 82 to 92 to 99?

Has A1C increased?

What happened to your liver enzymes?

Has your waist circumference changed?

Has your fasting insulin ever been measured?

A laboratory value that is technically “normal” can still provide useful information when you see where it has been heading over time.

That is one of the reasons I love functional blood chemistry: the pattern is often more informative than a single number.

When High Triglycerides Need More Immediate Attention

There is an important difference between mildly elevated triglycerides and very high triglycerides.

Triglycerides of 500 mg/dL or higher are considered severe enough that pancreatitis risk becomes an important concern, and the risk rises substantially as levels approach or exceed 1,000 mg/dL.

At those levels, this isn't something I would try to manage with supplements and dietary experimentation alone.

Medical evaluation and appropriate treatment are important.

Functional medicine should complement appropriate medical care—not replace it when a laboratory finding requires prompt treatment.

Don't Just Chase the Number

Elevated triglycerides aren't a diagnosis by themselves.

They're information.

They may be pointing toward insulin resistance, blood sugar dysregulation, excess alcohol intake, thyroid dysfunction, fatty liver, medication effects, lifestyle factors, genetics—or several of these occurring at the same time.

Instead of asking only, “How do I lower my triglycerides?

I think the more useful question is: “Why are my triglycerides high in the first place?”

Once you understand what is driving the pattern, you can create a much more individualized plan.

FAQ

Why are my triglycerides high if I eat healthy?

Triglycerides can be influenced by much more than diet. Insulin resistance, genetics, alcohol, thyroid function, liver health, certain medications, physical activity and overall metabolic health can all contribute.

Can you have high triglycerides with normal blood sugar?

Yes. Fasting glucose can remain within the laboratory reference range while fasting insulin is elevated and insulin resistance is developing. This is one reason glucose alone may not provide a complete picture of metabolic health.

Can insulin resistance cause high triglycerides?

Insulin resistance is commonly associated with elevated triglycerides. When insulin signaling becomes impaired, changes in fatty-acid metabolism and liver VLDL production can contribute to higher circulating triglycerides.

What foods raise triglycerides the most?

Excess calories, added sugars, sugar-sweetened beverages, refined carbohydrates and alcohol can contribute to elevated triglycerides, particularly in people with insulin resistance or metabolic dysfunction.

Can fatty liver cause high triglycerides?

Fatty liver and elevated triglycerides commonly occur together because both can be related to underlying metabolic dysfunction and insulin resistance.

How quickly can triglycerides change?

Triglycerides can respond relatively quickly to changes in alcohol intake, diet, weight, blood-sugar regulation and activity, although the response varies depending on the underlying cause.

At New Direction Natural Medicine in Altamonte Springs, I use functional medicine and comprehensive blood chemistry analysis to look beyond individual lab values and identify patterns involving blood sugar, metabolic health, thyroid function, nutrients, liver health, inflammation, and other factors that may be contributing to how you feel.

If you've been told your labs are “fine” but the numbers keep moving in the wrong direction, it may be time to look at the bigger picture.