The portfolio diet is a heart-healthy eating pattern created to help lower LDL cholesterol, which is often called “bad” cholesterol. It is based on a group, or “portfolio,” of cholesterol-lowering foods that work together as part of a balanced diet.
This diet focuses on foods such as nuts, soy and other plant proteins, soluble fiber, plant sterols, and healthy unsaturated fats. Studies suggest that following the portfolio diet can help improve cholesterol levels and other markers linked to heart health.
The portfolio diet may be recommended for people with high cholesterol or those who want to reduce their risk of heart disease. A dietitian or doctor can help adapt it safely, especially for people with food allergies, digestive problems, chronic kidney disease, or those taking cholesterol-lowering medication.
Main benefits
The main benefits of the portfolio diet include:
1. Lowering LDL cholesterol
The portfolio diet can help reduce LDL cholesterol, which is often called “bad” cholesterol. Lower LDL levels can help reduce fatty buildup in the arteries and support heart health.
2. Improving other blood fat levels
This diet may also help improve non-HDL cholesterol, apolipoprotein B, and triglyceride levels. These markers are linked to how much fat is circulating in the blood and how it may affect the arteries.
3. Supporting healthy blood pressure
The portfolio diet includes foods rich in fiber, plant protein, nuts, and healthy fats, which may help support healthier blood pressure. Better blood pressure control can reduce strain on the heart and blood vessels.
4. Reducing inflammation markers
This eating pattern may help lower C-reactive protein, a marker linked to inflammation in the body. Lower inflammation may support overall cardiovascular health.
5. Reducing heart disease risk
By helping improve cholesterol, blood pressure, and inflammation markers, the portfolio diet may help reduce the risk of heart disease. It may be especially useful for people with high cholesterol or other cardiovascular risk factors.
6. Offering a flexible eating pattern
The portfolio diet combines several cholesterol-lowering foods instead of relying on one single food. This can make it easier to adapt to different preferences, routines, and meal patterns.
Foods to include
The portfolio diet is mainly based on plant foods that can help lower cholesterol when eaten regularly. These foods are usually added while also reducing foods high in saturated fat.
Soluble fiber foods
Soluble fiber, also called viscous fiber, helps reduce cholesterol absorption in the gut. Foods rich in this type of fiber include:
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Oats;
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Barley;
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Psyllium;
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Beans;
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Lentils;
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Apples;
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Citrus fruits;
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Berries;
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Eggplant;
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Okra.
These foods can be included in meals and snacks throughout the day. Increasing fiber slowly and drinking enough fluids can help reduce gas, bloating, or changes in bowel habits.
Plant proteins
The portfolio diet encourages plant-based proteins, especially soy protein and legumes. Examples include:
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Tofu;
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Tempeh;
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Soy milk;
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Edamame;
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Beans;
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Lentils;
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Chickpeas;
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Peas.
These foods can replace some animal proteins that are higher in saturated fat, such as fatty meats or full-fat dairy products.
Nuts and seeds
Nuts and seeds are another important part of the portfolio diet. They provide unsaturated fats, fiber, and other nutrients that support heart health.
Examples include almonds, walnuts, peanuts, chia seeds, flaxseeds, and sunflower seeds. They are calorie-dense, so portions should be moderate, especially for people who are trying to manage body weight.
Plant sterols
Plant sterols and stanols are compounds that can help reduce cholesterol absorption. They are found naturally in small amounts in plant foods, but portfolio diet plans often use fortified foods to reach effective amounts.
Examples may include sterol-fortified spreads, drinks, or yogurts. These products may not be suitable for everyone, so medical or dietitian guidance is helpful, especially for people taking cholesterol-lowering medication.
Healthy fats
The portfolio diet favors unsaturated fats instead of saturated fats. These fats can come from foods such as avocado, olive oil, canola oil, nuts, seeds, and other plant oils.
Replacing saturated fats with unsaturated fats can help support healthier cholesterol levels. This approach is also consistent with other heart-healthy eating patterns.
Foods to avoid
The portfolio diet does not usually require completely avoiding all animal foods, but it recommends limiting foods high in saturated fat. These foods can raise LDL cholesterol when eaten often.
Foods to limit include:
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Fatty cuts of meat;
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Processed meats, such as bacon, sausage, and deli meats;
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Full-fat milk, cheese, cream, and butter;
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Pastries, cakes, cookies, and other baked goods made with large amounts of butter or shortening;
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Fried foods;
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Coconut oil and palm oil;
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Highly processed snack foods.
Foods high in trans fat should also be avoided whenever possible. Trans fats can increase LDL cholesterol and lower HDL cholesterol, which is often called “good” cholesterol.
How to follow the portfolio diet
The portfolio diet can be followed by adding several cholesterol-lowering foods to daily meals instead of making one single change. The goal is to build a pattern that includes soluble fiber, plant protein, nuts, plant sterols, and healthy fats.
A practical way to start is to replace some foods high in saturated fat with plant-based options. For example, oats can be used at breakfast, beans or lentils can be added to lunch, nuts can be used as a snack, and tofu or another plant protein can be used at dinner.
Some portfolio diet plans use daily targets, such as about 2 g of plant sterols, 45 g of nuts, 50 g of plant protein, and 20 g of viscous fiber. These amounts may not be realistic or suitable for everyone, so they should be adapted to individual needs.
The diet works best when followed consistently. Smaller changes, such as adding oats, beans, nuts, and plant oils more often, may still be helpful even if the full diet is not followed perfectly.
Sample meal plan
The following meal plan is an example of how the portfolio diet can be organized in one day:
This meal plan is only an example. Portions and food choices can vary depending on calorie needs, cholesterol goals, food preferences, allergies, and other health conditions.
Possible risks and precautions
The portfolio diet is generally based on nutritious foods and is usually well tolerated. However, some people may need extra care before making major dietary changes.
People with nut, peanut, or soy allergies should avoid those foods and ask a dietitian about safe alternatives. Those with irritable bowel syndrome or other digestive problems may also need to increase fiber slowly, as high-fiber foods can cause bloating, gas, or changes in bowel movements.
People with chronic kidney disease may need guidance before increasing nuts, legumes, soy foods, or other plant proteins. This is because some nutrients in these foods may need to be limited depending on kidney function and medical advice.
Plant sterol-fortified foods should be used carefully, especially by people already taking cholesterol-lowering medication. A doctor or dietitian can help decide whether these products are necessary and safe.
The portfolio diet should not replace medication prescribed for high cholesterol or heart disease. Any changes to medication should only be made with medical guidance.
When to see a dietitian
A dietitian can help plan the portfolio diet in a safe and realistic way. This may be especially useful for people with high cholesterol, heart disease, diabetes, chronic kidney disease, food allergies, digestive disorders, or difficulty planning balanced meals.
Dietitian support may also help people choose appropriate portions, avoid nutrient gaps, and understand food labels. This can make the diet easier to follow over time.
Medical care is also important when cholesterol levels remain high despite diet changes. A doctor may recommend blood tests, lifestyle changes, medication, or a combination of treatments depending on overall cardiovascular risk.