Cholesterol tends to steal the spotlight, but it is not the only fat that matters for your heart. Triglycerides are the most common type of fat in your body, and a raised level is a useful signal about both your cardiovascular and metabolic health.
What triglycerides are
When you eat, any calories your body does not use straight away are converted into triglycerides and stored in fat cells for later energy. Between meals, hormones release them again as fuel. This is a completely normal process — the concern is only when levels in the blood stay persistently high, which suggests you are taking in more energy than you are using or that your metabolism is not handling fats well.
What pushes triglycerides up
Triglycerides are strongly influenced by lifestyle, which means they often respond well to change. Common contributors include:
- A diet high in refined carbohydrates, sugar and alcohol.
- Being overweight, particularly around the middle.
- Type 2 diabetes or insulin resistance.
- Physical inactivity.
- An underactive thyroid or certain medications.
- In some people, an inherited tendency.
Why a fasting sample is sometimes requested
Triglycerides rise sharply after eating, so your clinic may ask you to fast for around 8–12 hours (water is fine) before the test to get a stable reading. Many modern labs accept a non-fasting sample for routine screening, but if a previous result was high, a fasting test gives a clearer figure. Always follow the specific instructions given for your booking.
Check your triglycerides
Our lipid profile includes triglycerides alongside HDL, LDL, non-HDL cholesterol and your cholesterol ratio — so you see your full blood-fat picture in one test.
Check your triglyceridesHow triglycerides relate to heart risk
High triglycerides often travel with other risk factors — low HDL, raised blood sugar and extra weight around the middle — a cluster sometimes called metabolic syndrome. On their own they are a weaker predictor of heart disease than LDL cholesterol, but as part of this pattern they add to overall cardiovascular risk. Very high levels also carry a separate risk of inflaming the pancreas, so they are worth taking seriously.
When to get checked
Triglycerides are usually measured as part of a routine cholesterol check. It is worth testing if you are over 40, carry excess weight, have diabetes or a family history of heart disease, or want to track the effect of dietary changes. If a result comes back raised, your doctor can advise on the lifestyle steps most likely to bring it down.
Check your triglycerides
Book online with OneMedicine — CQC-registered clinic in Birmingham, or a home visit / local clinic nationwide. Doctor-reviewed results, most within 24 hours.
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Specialist interest: Cardiovascular Medicine · OneMedicine, CQC-registered clinic