Short answer: triglycerides are a circulating form of stored energy. A high result can reflect recent food intake, alcohol, excess energy, insulin resistance, diabetes, medicines, genetics or other health conditions. Training helps, but it does not make high triglycerides harmless.
Very high triglycerides can increase the risk of acute pancreatitis, while more moderate elevations often travel with other metabolic and cardiovascular risks. The correct response depends on the concentration, whether the sample was fasting and what is driving the result.
Key takeaway: repeat and interpret the result with a clinician. Do not try to correct severe triglycerides with an over-the-counter fish-oil product or a crash diet.
Table of contents
- What are triglycerides?
- Where they appear on a lipid panel
- Common causes in athletes
- Fasting and repeat testing
- Why high triglycerides matter
- AAS and PED considerations
- Evidence-based ways to lower triglycerides
- Omega-3 and other supplements
- Frequently asked questions
- References
What are triglycerides?
A triglyceride consists of glycerol attached to three fatty acids. Triglycerides store energy in body fat and travel in lipoproteins after meals and between tissues. They are normal and necessary; persistent excess is the concern.
The liver packages triglycerides into very-low-density lipoproteins, or VLDL. After triglycerides are delivered to tissues, remnant particles remain. These remnants carry ApoB and can contribute to atherosclerosis.
Where they appear on a lipid panel
Australian laboratories usually report triglycerides in mmol/L. They sit beside LDL-C, HDL-C, total cholesterol and non-HDL-C. High triglycerides can make some calculated LDL-C methods less reliable, which may lead a clinician to use non-HDL-C, ApoB, direct LDL-C or a repeat fasting sample.
Read the lipid-panel guide for report interpretation and ApoB explained for athletes for particle-number context.
Common causes in athletes
- testing soon after a meal;
- alcohol, including a large intake in the preceding days;
- excess total energy or rapid weight gain;
- high intake of refined carbohydrate or sugar-sweetened drinks;
- insulin resistance or diabetes;
- hypothyroidism, kidney or liver conditions;
- some medicines and PEDs;
- genetic hypertriglyceridaemia; and
- acute illness.
A bodybuilder can be muscular and still develop insulin resistance or high triglycerides during a rapid mass phase. An endurance athlete can have an inherited disorder. Performance does not diagnose metabolic health.
Fasting and repeat testing
Non-fasting lipids are useful for routine assessment, but fasting testing may be requested when triglycerides are high or calculated LDL-C is uncertain. Follow the pathology instructions exactly.
For a comparable repeat, use the same fasting status, report alcohol and major dietary changes, and avoid testing during acute illness when it is safe to wait. Do not dehydrate yourself, add extra cardio or extend the fast to manipulate the number.
Why high triglycerides matter
High triglycerides often occur with low HDL-C, high remnant cholesterol, central adiposity, diabetes and high blood pressure. This pattern can increase atherosclerotic cardiovascular risk.
When triglycerides become very high, pancreatitis risk becomes an immediate concern. Severe upper-abdominal pain, persistent vomiting or significant illness requires urgent medical assessment. The concentration at which treatment becomes urgent should be interpreted by a clinician, not a blog chart.
AAS and PED considerations
AAS more consistently produce concern through low HDL-C and higher LDL-related markers, but triglycerides can also change with diet, alcohol, insulin resistance, growth hormone, thyroid products, body-mass gain and combined drug exposure.
One normal triglyceride result does not make AAS use safe. Blood pressure, haematocrit, ApoB and heart structure are separate domains. Use the enhanced-athlete heart-health guide for the complete context.
Evidence-based ways to lower triglycerides
- Address alcohol. Reducing or stopping alcohol can be one of the most effective changes when it is a driver.
- Improve glycaemic health. Diagnose and treat diabetes or insulin resistance.
- Reduce excess energy and refined carbohydrate. Keep the plan compatible with training and adequate protein.
- Use regular aerobic and resistance exercise.
- Manage excess body fat and rapid weight gain.
- Review medicines and PEDs. Do not stop prescriptions without advice.
- Use medicine when indicated. Severe or high-risk results can require prompt pharmacological treatment.
See how athletes can improve cholesterol for the broader action guide.
Omega-3 and other supplements
Prescription-strength omega-3 products can lower triglycerides for defined clinical indications. Over-the-counter fish-oil capsules vary in EPA/DHA content, oxidation, quality and evidence, and should not be assumed equivalent.
Some formulations can increase LDL-C, and bleeding or medicine interactions may matter. Severe triglycerides are not a supplement-only problem. Fibre, bergamot and other products also have limits and should not delay treatment.
Frequently asked questions
Can athletes have high triglycerides?
Yes. Alcohol, diet, excess energy, diabetes, medicines, PEDs and genetics can raise triglycerides regardless of fitness.
Do I need to fast for triglycerides?
Not always, but fasting may be requested after a high result or when calculated LDL-C is uncertain.
Can a meal raise triglycerides?
Yes. Triglycerides normally rise after eating, which is why sample context matters.
Does alcohol raise triglycerides?
Alcohol can substantially raise triglycerides in susceptible people and also adds energy and blood-pressure risk.
Does cardio lower triglycerides?
Regular aerobic activity often helps, especially with improved energy balance and insulin sensitivity.
Can steroids raise triglycerides?
They may contribute directly or through combined diet, body-mass and PED effects, but HDL-C and LDL/ApoB changes are often more prominent.
When are triglycerides dangerous?
Very high concentrations increase pancreatitis risk. Promptness depends on the result, symptoms and context, so seek medical advice.
Does fish oil lower triglycerides?
Prescription omega-3 products can lower triglycerides for defined indications. Ordinary supplements are not automatically equivalent.
Can I treat high triglycerides with supplements alone?
Do not rely on supplements for severe or persistent elevation. Address the cause and use prescribed treatment when indicated.
References and further reading
- National Heart Foundation of Australia: High blood cholesterol and triglycerides
- Australian Guideline for Assessing and Managing Cardiovascular Disease Risk
This article provides general education and does not interpret an individual triglyceride result. Seek medical advice for severe results or symptoms.