Cholesterol Values Explained: LDL, HDL, Triglycerides

TL;DR: Total cholesterol below 200 mg/dl, LDL below 116 mg/dl (optimal below 100), HDL above 50 mg/dl (women) or above 40 mg/dl (men), optimal above 60 mg/dl. Triglycerides below 150 mg/dl, optimal below 100. You get all four values from a single blood draw. For a more precise risk assessment, add ApoB and Lp(a).

This article does not replace medical advice. If your values are significantly elevated or you have a family history of cardiovascular disease, consult a physician.

Cholesterol: Friend or Foe?

Cholesterol has a bad reputation that is only partially deserved. Your body needs cholesterol for three core functions: it stabilizes every cell membrane, serves as the precursor for steroid hormones like testosterone, estrogen, and cortisol, and your body uses it to produce vitamin D and bile acids. Without cholesterol, no hormonal system, no stable cells, no fat digestion.

About 80 percent of your cholesterol is produced by the liver. Only 20 percent comes from food. This explains why eating three eggs a day barely moves total cholesterol in most people. The danger comes not from cholesterol itself, but from too much LDL cholesterol over too many years. Cumulative arterial exposure is the actual risk factor.

A concrete example: Your total cholesterol reads 210 mg/dl and your doctor says it is too high. In reality, the distribution matters. An HDL of 75 with an LDL of 105 is a favorable profile. An HDL of 35 with an LDL of 155 is a different story. Individual values count, not the sum.

The Lipid Panel: 4 Values, 1 Blood Draw

A standard lipid panel delivers four values. Together, they paint a clear picture of your fat metabolism.

Marker	What It Shows	Reference Range	Optimal
Total Cholesterol	Sum of all fractions	below 200 mg/dl	below 200
LDL Cholesterol	Atherogenic particles	below 116 mg/dl	below 100
HDL Cholesterol	Protective particles	women above 50, men above 40 mg/dl	above 60
Triglycerides	Dietary fats in blood	below 150 mg/dl	below 100

Total cholesterol gives you a rough orientation. LDL indicates your atherosclerosis risk. HDL shows your protective capacity. Triglycerides reflect metabolic health, particularly sugar and alcohol consumption. All four values come from a single fasting blood draw and cost roughly 25 to 50 euros as an out-of-pocket test.

For context on how these markers fit into the bigger picture, read the guide on understanding blood values.

LDL Cholesterol: The Risk Factor

LDL transports cholesterol from the liver to the cells. When too much circulates in the blood, LDL particles lodge in the artery walls. There they oxidize, trigger an inflammatory response, and form plaques. This process is called atherosclerosis and unfolds silently over decades.

Not all LDL particles are equal. Small, dense LDL particles penetrate artery walls more easily than large, buoyant ones. Someone with many small particles carries a higher risk at the same LDL reading. This is why cardiologists increasingly discuss ApoB as a better marker, because it counts particle number rather than cholesterol mass.

The ESC guidelines (European Society of Cardiology, 2021) define LDL targets by risk group:

Risk Group	LDL Target	Example
Low risk	below 116 mg/dl	Healthy adults under 40, no pre-existing conditions
Moderate risk	below 100 mg/dl	Smokers, mild hypertension
High risk	below 70 mg/dl	Diabetes, significant dyslipidemia
Very high risk	below 55 mg/dl	Prior heart attack, stroke, severe atherosclerosis

A ferritin of 18 ng/ml tells you your iron stores are empty. An LDL of 145 mg/dl tells you a risk is growing. The difference: you do not feel LDL damage until it is too late. That is why early testing matters.

HDL Cholesterol: The Counterbalance

HDL works like a cleanup crew. It collects excess cholesterol from artery walls and transports it back to the liver for breakdown. This process is called reverse cholesterol transport and is your primary defense mechanism against atherosclerosis.

The thresholds are clear: HDL below 40 mg/dl in men and below 50 mg/dl in women counts as an independent risk factor. Optimal values sit above 60 mg/dl. Very high HDL above 90 mg/dl does not provide additional protection and may, in rare cases, indicate genetic variants.

What raises HDL: Regular aerobic exercise increases HDL by 5 to 15 percent, strength training by 2 to 5 percent. Moderate alcohol consumption (one glass of red wine) boosts HDL by 5 to 10 percent, though overall alcohol risk outweighs the benefit beyond two drinks. Losing 3 kg of body weight raises HDL by roughly 1 mg/dl. Trans fats and smoking lower HDL.

A concrete example: Your HDL sits at 38 mg/dl. Your doctor prescribes a statin. Before filling the prescription, you start running three times per week for 45 minutes. Twelve weeks later, your retest shows HDL at 48 mg/dl. In Lab2go, you see the trend line climbing immediately.

Triglycerides: The Overlooked Marker

Triglycerides are the most common fat in the blood. They deliver energy but are stored in the liver when there is a surplus. Elevated triglycerides signal metabolic imbalance and are often the first warning sign of insulin resistance.

The measurement must be fasting. After a fatty meal, triglycerides can spike by 20 to 50 percent. The reference range is below 150 mg/dl; optimal is below 100 mg/dl. Values above 500 mg/dl require immediate medical evaluation due to pancreatitis risk.

The three main drivers of elevated triglycerides are sugar, alcohol, and excess body weight. Fructose from soft drinks and fruit juices is converted directly into triglycerides by the liver. Two weeks of alcohol abstinence often lower elevated triglycerides by 20 to 40 percent. Reducing body weight by 5 percent produces an average triglyceride drop of 20 to 30 percent.

The triglyceride-to-HDL ratio is a strong predictor of insulin resistance. If the ratio exceeds 3.5 (triglycerides divided by HDL, both in mg/dl), it points to metabolic problems. Below 2.0 is ideal.

Advanced Lipid Markers

The standard lipid panel is sufficient for most people. Those who want a more precise risk assessment or have a family history should consider four additional markers.

Lp(a) (Lipoprotein(a)). Genetically determined and not modifiable through diet or statins. About 20 percent of the population have elevated values above 50 nmol/l (or 30 mg/dl), which double cardiovascular risk. A single lifetime measurement is enough, since the value does not change. If Lp(a) is elevated, every other risk factor must be optimized aggressively.

ApoB (Apolipoprotein B). Every atherogenic particle (LDL, VLDL, Lp(a)) carries exactly one ApoB molecule. ApoB therefore counts the total number of dangerous particles, not the cholesterol mass inside them. Optimal is below 90 mg/dl, below 65 mg/dl at high risk. Many cardiologists consider ApoB a better marker than LDL.

LDL particle count and size. Small, dense LDL particles are more atherogenic than large, buoyant ones. An NMR lipid profile reveals your particle distribution. This test costs 80 to 150 euros and is valuable when LDL and ApoB values are discordant.

Oxidized LDL (ox-LDL). Measures LDL particles that have already oxidized and are driving inflammation inside artery walls. Not yet a routine marker, but promising in current research. Before your next blood draw, review the biomarker baseline checklist to avoid preparation mistakes.

What Actually Influences Cholesterol

Five factors shape your lipid profile. You can modify most of them; one is fixed.

Diet. Saturated fats from butter, cheese, and fatty meats raise LDL by 5 to 15 percent. Trans fats from processed baked goods and fried foods are doubly harmful: they raise LDL and lower HDL simultaneously. Fiber, omega-3 fatty acids, and plant sterols lower LDL. The impact of dietary cholesterol (eggs, organ meats) is small for most people.

Exercise. 150 minutes of moderate aerobic activity per week lowers triglycerides by 15 to 25 percent and raises HDL by 5 to 15 percent. The effect on LDL is moderate (minus 5 to 10 percent). Strength training improves insulin sensitivity and thereby indirectly benefits the lipid profile.

Weight. Every kilogram of excess weight worsens the lipid profile. A 5 percent weight reduction (4 kg at 80 kg starting weight) lowers triglycerides by 20 to 30 percent and LDL by 5 to 8 percent. For those with obesity, weight reduction is the single most effective intervention.

Genetics. Familial hypercholesterolemia (FH) affects 1 in 250 people. With heterozygous FH, LDL often exceeds 190 mg/dl despite a healthy lifestyle. With homozygous FH, it can exceed 500 mg/dl. If heart attacks have occurred in your family before age 55 (men) or 65 (women), get tested for FH.

Thyroid function. Hypothyroidism raises LDL by 20 to 30 percent because the liver produces fewer LDL receptors. A TSH above 4.0 mIU/l should be investigated before you start LDL-lowering measures. For a detailed explanation of thyroid values, read the article on understanding thyroid values.

Without Medication: What You Can Do Yourself

Before statins enter the picture, you have four levers that together can lower LDL by 15 to 25 percent and triglycerides by 30 to 50 percent.

Dietary changes. Replace saturated fats with monounsaturated ones (olive oil, avocado, nuts). Eat 10 to 25 g of soluble fiber daily from oats, psyllium husk, legumes, and apples. Soluble fiber binds bile acids in the gut; the liver must produce new ones from cholesterol and pulls LDL from the blood to do so. A handful of walnuts (30 g) per day lowers LDL by 5 to 8 percent. Add omega-3 fatty acids from fatty fish (2 to 3 servings per week) or as a supplement. For dosing details, read the guide on omega-3 dosing.

Exercise. 150 minutes of moderate aerobic activity per week, which means 30 minutes on 5 days. Brisk walking, cycling, swimming. Add strength training twice per week. The effect on triglycerides and HDL appears after 8 to 12 weeks.

Weight reduction. If you are overweight, every kilogram lost improves your lipid profile. A 5 percent body weight reduction (4 kg at 80 kg starting weight) lowers triglycerides by 20 to 30 percent, LDL by 5 to 8 percent, and raises HDL by 2 to 5 percent.

Stress and sleep. Chronic stress raises cortisol, which stimulates the liver to produce more cholesterol. Sleeping less than 6 hours worsens insulin sensitivity and drives triglycerides upward. Aim for 7 to 8 hours, avoid blue light after 9 pm, and establish a consistent sleep routine.

If you are unsure where to start with supplements, read the supplement beginners guide. It covers the basics on omega-3, vitamin D, and more.

Tracking: How Often to Test

The right test frequency depends on your risk profile. Testing too rarely means missing trends. Testing too often creates noise.

Standard (healthy adults). Once per year starting at age 35. Combined with your annual blood work, this is the foundation. Out-of-pocket cost: roughly 25 to 50 euros for the lipid panel.

Family history. Test every 6 months if heart attacks have occurred in your family before age 55 (men) or 65 (women). Get Lp(a) measured once.

After an intervention. Retest 8 to 12 weeks after a dietary change, exercise program, or medication switch to measure the effect. Testing earlier wastes money; testing later means missing the correction window.

Document context with every measurement: fasting or not, exercise in the past 48 hours, current medications, stress level. In Lab2go, you tag this information and immediately see how your LDL has developed over 12 months. For a deeper methodology on biomarker tracking, read the guide on long-term biomarker tracking.

Summary: Your Lipid Panel as an Early Warning System

Cholesterol values are neither a death sentence nor a clean bill of health. They are a data point in your health story. LDL below 116 mg/dl, HDL above 60 mg/dl, and triglycerides below 100 mg/dl are the targets to aim for. Those with family history should add Lp(a) and ApoB.

The good news: you can influence most of your lipid profile yourself. Fiber, omega-3, exercise, weight management, and quality sleep together deliver 15 to 25 percent LDL reduction. For many people, this is enough to delay or avoid medication.

Start today: request a full lipid panel (LDL, HDL, triglycerides, total cholesterol) at your next appointment, prepare with the baseline checklist, and document everything digitally. To get started, explore the features of Lab2go or compare the plans and pricing. After 12 weeks of intervention, you will see the difference in black and white.

This article does not replace medical advice. If your LDL exceeds 190 mg/dl, you have familial hypercholesterolemia, or you carry existing cardiovascular risk, always consult a physician. Lifestyle changes complement medicine; they do not replace it.