Ask a question about heart concepts.

LDL (low-density lipoprotein) carries cholesterol through the blood. When there is a lot of it over many years, some can settle into artery walls and contribute to plaque. That is why it is often called "bad" cholesterol. Lower LDL over a lifetime is generally associated with lower heart risk.

HDL (high-density lipoprotein) helps move cholesterol away from tissues back to the liver. It is often called "good" cholesterol, but raising HDL with medicine has not been shown to lower heart risk, so most education today focuses on LDL, ApoB and non-HDL cholesterol.

Total cholesterol adds together the cholesterol carried in LDL, HDL and other particles. It is a broad starting number. The parts (especially LDL and non-HDL) usually tell a more useful story than the total alone.

Non-HDL cholesterol is total cholesterol minus HDL. It captures cholesterol in all the particles that can contribute to plaque, including LDL and triglyceride-rich particles. It can be calculated from a standard lipid panel at no extra cost.

ApoB (apolipoprotein B) is a protein found on each particle that can enter artery walls. Measuring ApoB is like counting the number of those particles rather than weighing the cholesterol inside them. Many experts consider it a precise way to describe this type of risk.

Plaque (atherosclerosis) builds slowly when cholesterol-carrying particles enter the artery wall and trigger inflammation. Over years, the build-up can narrow arteries or break open and cause a clot. Particle number, time, blood pressure, smoking, diabetes and genetics all influence how fast it develops.

Professional guidelines describe general LDL ranges for different categories of risk, with lower targets suggested for people at higher risk. Your own goal can only be set by your own clinician, who knows your full history. Our protocol library summarizes how guidelines frame these categories.

For many people, saturated and trans fats affect blood LDL more than cholesterol in food. Responses vary from person to person. Eating patterns rich in vegetables, fruit, legumes, whole grains, nuts and fish are commonly described in heart-health education.

Lipoprotein(a), or Lp(a), is a particle similar to LDL with an extra protein attached. Its level is mostly set by genes and stays fairly stable through life. Higher levels are associated with higher risk of heart disease and narrowing of the aortic valve.

Because Lp(a) is largely inherited, many guidelines suggest measuring it at least once in adulthood. Whether and when to test is a decision for you and your own clinician.

Diet and exercise have little effect on Lp(a) because it is genetically determined. Education commonly focuses on lowering other risk factors, such as LDL and blood pressure. Several targeted Lp(a) therapies are being studied in clinical trials.

Yes. Lp(a) levels are passed down in families. Education materials often suggest that close relatives of someone with high Lp(a) talk with their own clinicians about testing.

Triglycerides are a type of fat in the blood that stores energy from food. Levels rise after meals and can be affected by sugar, refined carbohydrates, alcohol, weight, diabetes, some medicines and genetics.

Very high triglyceride levels are associated with a risk of pancreatitis (inflammation of the pancreas), in addition to heart risk. This is an area where prompt evaluation by a clinician is important.

Prescription omega-3 products have been studied for triglyceride lowering and, in some trials, heart-risk reduction. Over-the-counter supplements vary in content and are not the same as prescription products. Discuss any supplement with your own clinician.

Statins reduce how much cholesterol the liver makes. The liver then pulls more LDL out of the blood. Statins are among the most studied medicines in cardiology and have consistently been shown to lower heart attack and stroke risk in many groups.

Statin intolerance describes symptoms (most often muscle aches) that a person links to a statin and that stop them from taking it as intended. Studies show many people can later tolerate a different statin, a lower dose, or a less frequent schedule. Changes should only be made with a clinician.

The nocebo effect is when expecting a side effect makes you more likely to feel it. Blinded trials found that much of the muscle discomfort people reported on statins also appeared on placebo. This does not mean symptoms are imagined; it means they can be investigated carefully with a clinician.

A rechallenge is a structured, clinician-guided retry of a statin after a break, often with a different statin, a lower dose, or alternate-day dosing, while tracking symptoms. Our protocol library describes the general frameworks clinicians use.

Serious muscle damage from statins is rare. Mild aches are more commonly reported. Clinicians may check a blood test called CK when symptoms are significant. Any severe muscle pain, weakness or dark urine needs urgent medical attention.

Mild changes in liver blood tests can occur and usually are not dangerous. Statin use in advanced liver disease is a specialist decision. Our cirrhosis protocol summary explains the general considerations.

Statins can slightly raise blood sugar, mostly in people already close to diabetes. Large studies concluded that the heart benefit generally outweighs this effect for people at elevated risk. Your clinician can weigh this for you.

Ezetimibe reduces how much cholesterol the gut absorbs. It is a pill that lowers LDL moderately and is often used alone or with a statin.

PCSK9-targeting medicines (injections such as evolocumab, alirocumab and inclisiran) help the liver clear much more LDL from the blood. They lower LDL substantially and are often discussed when statins are not enough or not tolerated.

Bempedoic acid is a pill that lowers cholesterol production in the liver through a different step than statins. Because it is activated mainly in the liver rather than muscle, it has been studied in people who report statin-related muscle symptoms.

Some supplements have modest cholesterol effects, but their strength and purity vary and they are not regulated like medicines. Red yeast rice can contain a statin-like compound. Always tell your clinician about any supplement.

FH is an inherited condition that causes very high LDL from birth. Early heart disease in the family, very high LDL, or cholesterol deposits on tendons can be clues. Early recognition matters because treatment can greatly reduce lifelong risk.

Cascade screening means testing close relatives once one family member is found to have an inherited condition like FH. It helps find people who may benefit from early care.

A standard lipid panel measures total cholesterol, HDL and triglycerides, and calculates or measures LDL. Non-HDL can be calculated from it. Some clinicians add ApoB or Lp(a).

Many labs now accept non-fasting lipid panels. Fasting may be requested when triglycerides are high. Follow the instructions from the lab or clinician who ordered the test.

A coronary artery calcium scan is a CT scan that looks for calcified plaque in heart arteries. The score helps some clinicians refine risk discussions, especially when the decision about prevention therapy is uncertain.

Risk calculators estimate the chance of heart events over a time period using age, blood pressure, cholesterol, diabetes, smoking and other factors. They are tools for a conversation with your clinician, not a diagnosis.

High-sensitivity C-reactive protein (hs-CRP) is a blood marker of inflammation. Some clinicians use it as an extra piece of information when discussing heart risk.

High blood pressure strains artery walls and the heart over time, raising the risk of heart attack, stroke, kidney disease and heart failure. It often has no symptoms, which is why regular checks matter.

General tips: sit quietly for five minutes, back supported, feet flat, arm at heart level, correct cuff size, no caffeine or exercise 30 minutes before, and take two readings a minute apart. Share logs with your clinician.

Heart-health education commonly describes patterns rich in vegetables, fruit, legumes, whole grains, nuts, seeds and fish, with less processed meat, refined sugar and saturated fat. Mediterranean-style and DASH-style eating are widely studied examples.

Many public-health organizations suggest about 150 minutes a week of moderate activity, plus muscle strengthening on two days. Any increase from your current level is generally considered beneficial. Check with your clinician before starting something new if you have a heart condition.

Smoking damages artery linings, raises clot risk and speeds plaque formation. Stopping at any age lowers risk over time. Local quit lines and clinicians can help.

Regular, good-quality sleep is considered part of heart health. Untreated sleep apnea is linked to high blood pressure and heart rhythm problems.

Current research does not support drinking alcohol for heart protection. Alcohol can raise triglycerides and blood pressure. If you do not drink, education materials do not suggest starting.

Weight change can affect triglycerides, HDL, blood pressure and blood sugar. Newer weight-related medicines have been studied for heart outcomes. These are decisions for you and your clinician.

Common warning signs include chest pressure or pain, pain spreading to the arm, jaw or back, shortness of breath, cold sweat, nausea or light-headedness. Symptoms can differ, especially in women. If you think you are having a heart attack, call your local emergency number now.

Think BE FAST: Balance loss, Eye changes, Face drooping, Arm weakness, Speech difficulty, Time to call emergency services. Stroke is an emergency.

Atrial fibrillation is an irregular heart rhythm in the upper chambers. It can raise stroke risk. Some people feel palpitations, others feel nothing. Diagnosis needs an ECG reviewed by a clinician.

Heart failure means the heart cannot pump or fill as well as the body needs. It does not mean the heart has stopped. Many treatments help people live longer and feel better.

Heart disease is a leading cause of death in women. Pregnancy complications such as preeclampsia, early menopause and autoimmune conditions are recognized as factors that can raise later heart risk.

Some cancer therapies can affect the heart. Cardio-oncology is the field focused on protecting heart health before, during and after cancer care. Discuss this with your oncology and cardiology teams.

No. Everything here is general education. It is not medical advice, diagnosis or treatment, and using it does not make you a patient of My Heart Spark, PC. For care, speak with your own licensed clinician.

Yes. Public education is available worldwide in English. Units, medicine names and guidelines differ between countries, so always check with a clinician licensed where you live.

You can reach the education team at connect@myheartspark.com. Please do not include personal health details in messages.