Is high total cholesterol necessarily bad?

No. Total cholesterol can be high because HDL (the “good” cholesterol) is high, so LDL and HDL should be considered together.

What is the difference between LDL and HDL?

LDL can accumulate in blood vessel walls and contribute to atherosclerosis, while HDL helps transport cholesterol away from blood vessels.

Are triglycerides also cholesterol?

Triglycerides are a different type of blood fat than cholesterol, but both are included in a lipid panel and may be elevated with dyslipidemia.

How to Interpret Your Cholesterol Levels

Meaning of total cholesterol, LDL, HDL, and triglycerides

Before reading this article

If you look at your health checkup results, you will see terms like “total cholesterol,” “LDL,” “HDL,” and “triglycerides.” It's easy to get confused about what should be high and what should be low.

Summary of key concepts

Cholesterol is a substance the body needs, but its effect on health depends on its type and amount.

Total cholesterol

It is the sum of all cholesterol in the blood.

**Normal**: Less than 200 mg/dL
**Boundary**: 200~239
**High**: 240 or higher

LDL cholesterol (bad cholesterol)

Cholesterol accumulates on the walls of blood vessels and causes arteriosclerosis.

**Normal**: Less than 100 mg/dL
**Boundary**: 130~159
**High**: 160 or higher

HDL cholesterol (good cholesterol)

It transports cholesterol accumulated in blood vessels to the liver and removes it.

**Low** (Risk): less than 40 mg/dL (men), less than 50 (women)
**Optimum**: 60 or higher

Triglycerides

Fat that is not used for energy after a meal is stored in the blood.

**Normal**: Less than 150 mg/dL
**Boundary**: 150~199
**High**: 200 or higher

Tips that actually help

How to interpret the numbers

Don't just look at total cholesterol, check the balance of LDL and HDL.

High LDL and low HDL are dangerous
It is good if LDL is low and HDL is high.

Reasons why triglycerides are high

Excessive carbohydrate intake
Excessive drinking
Lack of exercise
Obesity

Common mistakes beginners make

**Check total cholesterol only**: LDL/HDL ratio is more important
**Worry about high HDL**: The higher the HDL, the better.
**Ignore triglycerides**: Triglycerides also increase the risk of cardiovascular disease

Key Summary

LDL (bad cholesterol): the lower the better.
HDL (good cholesterol): the higher the better.
Triglycerides: aim to keep them below 150 mg/dL.
Interpret the numbers together.

Checklist

[ ] Did you check your cholesterol level during your recent checkup?
[ ] Do you understand the difference between LDL and HDL?
[ ] Do you know your triglyceride level?
[ ] If the level is high, have you started controlling your diet?

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This article is for general health information purposes only and is not a substitute for medical diagnosis or prescription.