Porter Health
Understanding Cholesterol
A Patient's Guide to Cholesterol Management and Heart Health
Cholesterol is a waxy, fat-like substance found in every cell of your body. You need some cholesterol for good health - it helps make hormones, vitamin D, and substances that help digest food. But too much cholesterol in your blood can increase your risk of heart attack and stroke.
Think of Your Arteries Like Pipes:
When cholesterol builds up in your arteries, it forms plaque - sticky deposits that narrow the "pipes" carrying blood to your heart and brain. Over time, this buildup can:
The Silent Threat: High cholesterol has NO symptoms. You can't feel it. The only way to know your cholesterol levels is through a blood test called a lipid panel.
Cholesterol travels through your bloodstream in packages called lipoproteins. There are different types, and each affects your heart health differently:
LDL Cholesterol - "Bad" Cholesterol
Low-Density Lipoprotein
Why It's "Bad":
LDL carries cholesterol TO your arteries, where it can build up and form plaque. The higher your LDL, the greater your risk of heart attack and stroke.
Target Levels (Lower is Better):
HDL Cholesterol - "Good" Cholesterol
High-Density Lipoprotein
Why It's "Good":
HDL acts like a cleanup crew - it picks up excess cholesterol FROM your arteries and carries it back to your liver for disposal. Higher HDL = better protection against heart disease.
Target Levels (Higher is Better):
Triglycerides
The most common type of fat in your body
What They Are:
Triglycerides are fats stored in your body for energy. Your body converts excess calories (especially from sugar and alcohol) into triglycerides. High levels increase heart disease risk.
Target Levels (Lower is Better):
Total Cholesterol
Sum of all cholesterol types
What It Means:
Total Cholesterol = LDL + HDL + (Triglycerides ÷ 5). This gives a general overview, but LDL and HDL levels are more important for assessing your individual risk.
General Guidelines:
Non-HDL Cholesterol
Total Cholesterol minus HDL
Why It Matters:
Non-HDL captures all the "bad" cholesterol particles (LDL, VLDL, and others). It's a better predictor of heart disease risk than LDL alone, especially if you have high triglycerides.
Target Level:
Your non-HDL target should be 30 mg/dL higher than your LDL target. For example:
- If LDL target is <100 mg/dL, non-HDL target is <130 mg/dL
- If LDL target is <70 mg/dL, non-HDL target is <100 mg/dL
Good News: Lifestyle changes can improve your cholesterol significantly!
Even if you need medication, these changes will help lower your dose and improve your overall heart health.
1. Eat a Heart-Healthy Diet
Effect: Can lower LDL by 5-10% and raise HDL by 5-15%
✓ Eat More:
- Fruits and vegetables (5+ servings daily)
- Whole grains (oats, brown rice, quinoa)
- Fatty fish (salmon, mackerel, sardines) - 2x/week
- Nuts and seeds (almonds, walnuts, chia seeds)
- Olive oil, avocado oil
- Beans, lentils, chickpeas
✗ Eat Less:
- Saturated fat (red meat, butter, cheese)
- Trans fats (fried foods, baked goods)
- Processed meats (bacon, sausage, deli meat)
- Sugary foods and drinks
- Refined carbs (white bread, pastries)
2. Exercise Regularly
Effect: Can raise HDL by 5-10% and lower triglycerides by 20-30%
Exercise Goals:
- Aerobic: 150 minutes per week of moderate activity (brisk walking, cycling, swimming)
- Or: 75 minutes per week of vigorous activity (running, HIIT)
- Strength training: 2 days per week (weights, resistance bands)
- Even 10-minute walks help - every bit counts!
3. Lose Weight (if overweight)
Effect: Losing 10 lbs can lower LDL by 5-8% and triglycerides by 20%
Even 5-10% weight loss provides significant benefits. Focus on sustainable changes, not crash diets.
4. Quit Smoking
Effect: Can raise HDL by 5-10 mg/dL within weeks of quitting
Smoking lowers HDL (good cholesterol) and damages blood vessels. Quitting is one of the best things you can do for your heart.
5. Limit Alcohol
Excessive alcohol raises triglycerides significantly.
Limits:
- • Men: No more than 2 drinks per day
- • Women: No more than 1 drink per day
If lifestyle changes alone don't lower your cholesterol enough, medications can significantly reduce your risk of heart attack and stroke.
Common Cholesterol-Lowering Medications:
Statins (First-Line Treatment)
Lower LDL by 30-50%. Also reduce inflammation in arteries. Proven to prevent heart attacks and strokes.
Examples: Atorvastatin (Lipitor), rosuvastatin (Crestor), simvastatin, pravastatin
Most common side effect: Muscle aches (5-10% of people). Usually mild and manageable.
Ezetimibe (Zetia)
Blocks cholesterol absorption in the intestines. Lowers LDL by 15-20%. Often combined with statins.
Very well-tolerated, minimal side effects. Good option if you can't tolerate high-dose statins.
PCSK9 Inhibitors
Injectable medications that lower LDL by 50-60%. Used when statins alone aren't enough or for very high risk patients.
Examples: Evolocumab (Repatha), alirocumab (Praluent)
Given as injection every 2-4 weeks. Very effective but expensive.
Bempedoic Acid (Nexletol)
Newer oral medication. Lowers LDL by 15-25%. Good alternative if you can't tolerate statins.
Works in the liver (not muscles), so less likely to cause muscle pain.
Fibrates (for High Triglycerides)
Lower triglycerides by 30-50% and raise HDL by 10-20%. Used mainly for very high triglycerides.
Examples: Fenofibrate (Tricor), gemfibrozil (Lopid)
Prescription Omega-3 Fatty Acids
High-dose fish oil. Lower triglycerides by 20-30%. Used for triglycerides ≥ 200 mg/dL.
Examples: Icosapent ethyl (Vascepa), omega-3-acid ethyl esters (Lovaza)
Important Medication Tips:
- Take statins at night (cholesterol production peaks overnight)
- Don't stop taking medications without talking to your doctor - benefits continue as long as you take them
- Report muscle pain, weakness, or dark urine to your doctor immediately
- Get liver function tests as recommended (usually at baseline and periodically)
- If you experience side effects, talk to your doctor - there are many options to try
Use this checklist to guide your conversation about cholesterol management:
High cholesterol has NO symptoms - get tested regularly
LDL is "bad" (builds plaque), HDL is "good" (removes plaque)
Your LDL target depends on your cardiovascular risk—calculated from age, blood pressure, diabetes, smoking, etc. (not your LDL itself)
Lifestyle changes can lower LDL by 5-10% and raise HDL by 5-15%
Statins are proven to prevent heart attacks and strokes (30-50% LDL reduction)
Combination therapy (statin + ezetimibe) can lower LDL by up to 65%
High triglycerides increase heart disease risk - lower with diet, exercise, weight loss
Non-HDL cholesterol is a better predictor than LDL alone if triglycerides are high
References:
Based on the 2026 ACC/AHA Guideline on the Management of Dyslipidemia and 2019 ACC/AHA Guideline on the Primary Prevention of Cardiovascular Disease. This guide translates the latest clinical guidelines into patient-friendly language to help you understand and manage your cholesterol.
Blumenthal RS, Morris PB, Gaudino M, et al. 2026 ACC/AHA/AACVPR/ABC/ACPM/ADA/AGS/APhA/ASPC/NLA/PCNA Guideline on the Management of Dyslipidemia. J Am Coll Cardiol. 2026. doi:10.1016/j.jacc.2025.11.016
Arnett DK, Blumenthal RS, Albert MA, et al. 2019 ACC/AHA Guideline on the Primary Prevention of Cardiovascular Disease. Circulation. 2019;140(11):e596-e646. doi:10.1161/CIR.0000000000000678