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The best diets for heart health are not short-term plans built around one “superfood” or a rigid list of forbidden ingredients. They are sustainable eating patterns that emphasize vegetables, fruits, whole grains, legumes, nuts, seeds, fish, minimally processed foods, and unsaturated fats while limiting excess sodium, added sugar, refined carbohydrates, processed meat, and saturated fat.
For many people, Mediterranean and DASH-style eating patterns provide a strong combination of cardiovascular support, balanced nutrition, flexibility, and long-term sustainability. Well-planned pescatarian and vegetarian diets can also align closely with heart-health recommendations.
Food choices can affect energy through their influence on blood glucose, hydration, red blood cell production, thyroid function, nutrient intake, and total calorie balance. Persistent fatigue, however, should not automatically be blamed on diet. Laboratory testing may provide objective information about possible contributors such as anemia, depleted iron stores, abnormal glucose regulation, thyroid dysfunction, or vitamin B12 deficiency.
Ulta Lab Tests provides direct online access to many relevant blood tests. Laboratory results provide health information but do not replace professional medical advice, diagnosis, or treatment. Results should be reviewed with a qualified healthcare provider, especially when symptoms are persistent, severe, or worsening.
The Mediterranean and DASH diets are generally among the strongest all-around eating patterns for heart health and steady energy. Pescatarian and well-planned vegetarian diets are also strong options. A Portfolio-style diet may be helpful for people specifically focused on supporting healthy LDL cholesterol through plant proteins, nuts, soluble fiber, and foods containing plant sterols.
These eating patterns focus on overall food quality rather than extreme restriction. They provide fiber-rich carbohydrates for fuel, protein for muscle maintenance and satiety, unsaturated fats for cardiovascular health, and a broad range of vitamins and minerals.
A heart-healthy diet supports several interconnected body systems and health markers:
A heart-supportive eating pattern generally includes vegetables, fruits, whole grains, plant proteins, fish, low-fat dairy when included, and non-tropical vegetable oils. It also limits added sugar, excess sodium, highly processed foods, refined carbohydrates, processed meat, and major sources of saturated fat.
| Eating Pattern | Main Foods | Potential Heart-Health Advantages | Energy Considerations | Important Cautions |
|---|---|---|---|---|
| Mediterranean diet | Vegetables, fruit, beans, whole grains, nuts, seeds, fish, olive oil, and moderate amounts of dairy and poultry | Replaces many sources of saturated fat with unsaturated fat and strongly aligns with cardiovascular nutrition guidance | Provides fiber-rich carbohydrates, healthy fats, and protein for balanced meals | Portions still matter; wine is optional and is not required for health |
| DASH diet | Vegetables, fruit, whole grains, beans, nuts, low-fat dairy, fish, poultry, and vegetable oils | Developed to support healthy blood pressure and emphasizes potassium, calcium, magnesium, and fiber | Regular servings from several food groups can support consistent nutrient and energy intake | People with kidney disease or potassium restrictions need individualized advice |
| Pescatarian diet | Plant-forward foods plus fish and seafood | Can provide omega-3 fats, lean protein, fiber, and less processed meat | Fish, beans, whole grains, and vegetables can create balanced and filling meals | Seafood choices should account for allergies, mercury exposure, budget, and sustainability |
| Vegetarian diet | Vegetables, fruit, beans, lentils, soy foods, grains, nuts, seeds, dairy, or eggs when included | Can be high in fiber and lower in saturated fat when based on minimally processed foods | Beans, lentils, soy foods, whole grains, nuts, and seeds provide sustained fuel | Vitamin B12, iron, protein, iodine, calcium, zinc, and omega-3 intake may require planning |
| Portfolio-style diet | Nuts, plant proteins, soluble fiber, plant sterol-containing foods, and unsaturated oils | Designed around foods that may support lower LDL cholesterol | Fiber, healthy fats, and plant proteins may improve fullness and meal quality | May require additional meal planning and does not replace individualized medical care |
A Mediterranean-style diet emphasizes vegetables, fruit, beans, whole grains, nuts, seeds, olive oil, and modest portions of fish, poultry, eggs, and dairy. Red and processed meats, refined carbohydrates, sugary foods, and heavily processed products are limited.
There is no single Mediterranean menu. The pattern can be adapted to different cultures, budgets, dietary preferences, and food traditions. Its value comes from its overall structure—not simply from adding olive oil to an otherwise highly processed diet.
DASH stands for Dietary Approaches to Stop Hypertension. It emphasizes vegetables, fruit, whole grains, beans, nuts, low-fat dairy, fish, poultry, and vegetable oils while limiting saturated fat, sweetened drinks, sweets, and excess sodium.
The standard DASH framework limits sodium to approximately 2,300 milligrams per day, while a 1,500-milligram level may support additional blood-pressure reduction for some people. Sodium targets should be individualized when a person has kidney disease, takes certain medications, has low blood pressure, or has received different instructions from a healthcare provider.
A pescatarian diet combines plant-forward eating with fish and seafood. It can be an effective choice for people who want to reduce red and processed meat without avoiding all animal foods.
The quality of the overall pattern still matters. A pescatarian diet based on fish, vegetables, beans, whole grains, fruit, nuts, and unsaturated oils differs greatly from one dominated by fried seafood, refined grains, desserts, and salty packaged foods.
A vegetarian diet can support cardiovascular health when it is based on beans, lentils, soy foods, vegetables, fruit, whole grains, nuts, and seeds. Simply removing meat does not automatically produce a healthy diet. Refined carbohydrates, sugary beverages, and highly processed meat substitutes can still provide excess sodium, added sugar, or saturated fat.
People who avoid all animal foods need a dependable source of vitamin B12 because unfortified plant foods do not naturally provide meaningful amounts. Vitamin B12 deficiency can contribute to anemia, fatigue, weakness, and neurological symptoms. Taking additional vitamin B12 does not generally increase energy in people who already have adequate B12 status.
A practical heart-healthy meal may include:
Examples include:
Combining protein, fiber-rich carbohydrates, and healthy fats can make meals more satisfying than eating refined carbohydrates alone. Consistent meal timing may also help some people avoid becoming excessively hungry, although meal frequency should be adapted to personal preferences, health conditions, medications, and activity demands.
| Emphasize More Often | Limit or Replace More Often |
|---|---|
| Vegetables and fruit | Sugar-sweetened beverages |
| Beans, peas, and lentils | Processed meats |
| Oats, barley, quinoa, brown rice, and other whole grains | Refined grains and sweets |
| Nuts and seeds | Foods containing industrial trans fat |
| Fish and seafood | Frequent large portions of fatty or processed meat |
| Olive, canola, and other non-tropical vegetable oils | Butter, shortening, and excessive amounts of tropical oils |
| Low-fat dairy or fortified alternatives when appropriate | Excess sodium from packaged and restaurant foods |
| Water and unsweetened beverages | Excess alcohol |
| Minimally processed foods | Diets dominated by ultra-processed foods |
A person does not need to eat perfectly at every meal. Long-term consistency, food quality, and realistic substitutions are more important than one occasional indulgence.
Some people experience short-term weight loss or improved glucose measurements while following carbohydrate-restricted diets. However, a ketogenic pattern that relies heavily on butter, fatty meat, processed meat, coconut oil, or other saturated-fat sources may raise LDL cholesterol in some individuals. Restricting beans, fruit, and whole grains can also reduce fiber intake and make the pattern difficult to sustain.
People using a lower-carbohydrate approach can improve its nutritional quality by emphasizing vegetables, nuts, seeds, fish, avocado, olive oil, and minimally processed proteins rather than making saturated fat the foundation of the diet.
Many paleo plans eliminate whole grains, legumes, and dairy. This can make it more difficult to obtain adequate fiber, calcium, and other nutrients unless suitable replacements are planned carefully. A paleo-style diet varies considerably depending on whether it emphasizes vegetables, fish, nuts, and seeds or fatty meat and coconut products.
A whole-food vegan diet can be heart healthy, but vitamin B12 must be obtained from fortified foods or supplements. Iron, calcium, iodine, zinc, protein, vitamin D, and omega-3 intake may also require attention.
Fatigue in a person following a vegan diet should not automatically be attributed to protein deficiency. Blood counts, iron status, vitamin B12 status, thyroid function, sleep, total calorie intake, medications, and other factors may need to be considered.
Very-low-calorie diets or prolonged fasting can contribute to fatigue, dizziness, loss of lean tissue, dehydration, and difficulty meeting nutrient needs. Intermittent fasting is not inherently heart healthy or unhealthy. Food quality, total intake, medications, pregnancy status, eating-disorder history, and underlying medical conditions all matter.
| Symptom or Risk Factor | What It May Suggest | Tests That May Provide More Information |
|---|---|---|
| Family history of early heart disease | Possible inherited lipid or lipoprotein risk | Lipid Panel Test, Apolipoprotein B Test, and Lipoprotein (a) Test |
| High blood pressure | Increased cardiovascular or metabolic risk | Lipid Panel Test, Hemoglobin A1c Test, and Comprehensive Metabolic Panel |
| Energy crashes after meals | Meal imbalance or altered glucose regulation, among other possible causes | Hemoglobin A1c Test and Comprehensive Metabolic Panel |
| Persistent fatigue or reduced exercise tolerance | Anemia, low iron stores, vitamin B12 deficiency, thyroid dysfunction, sleep problems, infection, medication effects, or other causes | Complete Blood Count with Differential and Platelets, Ferritin, Iron and TIBC Panel, Vitamin B12 and Folate Panel Test, and TSH Test |
| Pale skin, shortness of breath, headaches, or weakness | Possible anemia or reduced oxygen-carrying capacity | Complete Blood Count with Differential and Platelets, Ferritin, Iron and TIBC Panel, and Vitamin B12 and Folate Panel Test |
| Cold intolerance, constipation, or unexplained weight changes | Possible thyroid dysfunction | TSH Test, with additional thyroid tests when clinically appropriate |
| Muscle cramps, weakness, vomiting, or dehydration | Possible fluid or electrolyte imbalance | Comprehensive Metabolic Panel and other targeted testing when appropriate |
| Highly restrictive diet | Possible nutrient shortfalls depending on the foods excluded | Complete Blood Count with Differential and Platelets, Ferritin, Iron and TIBC Panel, and Vitamin B12 and Folate Panel Test |
Iron is required to make hemoglobin, the red blood cell protein that carries oxygen from the lungs to body tissues. Iron deficiency may therefore contribute to fatigue, weakness, difficulty concentrating, and reduced exercise capacity. Ferritin reflects stored iron but may also rise during inflammation, infection, liver disease, and certain other conditions. This is one reason ferritin should not always be interpreted alone.
Safety note: Seek urgent medical care for chest pain or pressure, sudden or severe shortness of breath, fainting, new one-sided weakness, confusion, severe palpitations, or other sudden and concerning symptoms. Do not wait for routine laboratory testing.
Laboratory testing cannot grade a person’s overall diet or prove that a particular food caused a symptom. It can, however, provide objective information about measurable health factors influenced by nutrition, genetics, medications, physical activity, illness, and other variables.
No single result should usually be interpreted in isolation. A cholesterol test, for example, measures several blood lipids, but cardiovascular risk also depends on age, blood pressure, smoking, diabetes, kidney health, family history, symptoms, medications, and other factors.
| Lab Test | What It Measures | Why It May Matter | General Interpretation | Important Limitations |
|---|---|---|---|---|
| Lipid Panel Test | Total cholesterol, LDL cholesterol, HDL cholesterol, non-HDL cholesterol, triglycerides, and cholesterol ratios | Provides a foundational view of cholesterol and triglyceride status | Higher LDL cholesterol, non-HDL cholesterol, or triglycerides may be associated with increased cardiovascular risk | Results can be affected by genetics, diet, medications, illness, weight, alcohol intake, and fasting status |
| Apolipoprotein B Test | Apolipoprotein B on atherogenic lipoprotein particles | May provide additional information about the number of potentially plaque-forming particles | A higher ApoB level generally reflects a greater number of atherogenic particles | It is not required for every person and should be interpreted with the lipid panel and overall cardiovascular risk |
| Lipoprotein (a) Test | Lipoprotein(a), also called Lp(a) | May help clarify inherited cardiovascular risk, particularly when there is a family history of early cardiovascular disease | An elevated Lp(a) level can indicate higher inherited cardiovascular risk | Lp(a) is largely determined by genetics and usually changes little in response to diet |
| hs-CRP Test | Low concentrations of C-reactive protein | May add information about low-grade inflammation and cardiovascular risk in selected people | A persistently elevated result may be associated with increased cardiovascular risk | It is nonspecific; infection, injury, inflammatory disease, pregnancy, and recent strenuous exercise can affect results |
| Hemoglobin A1c Test | Average blood glucose exposure over approximately the previous two to three months | Helps evaluate glucose regulation and cardiometabolic risk | Higher values may fall within established prediabetes or diabetes ranges | Certain anemias, hemoglobin variants, kidney disease, pregnancy, and altered red blood cell turnover may affect results |
| Comprehensive Metabolic Panel | Glucose, electrolytes, kidney markers, liver markers, proteins, and calcium | Provides broad metabolic and organ-function information | High or low values may reflect many different health conditions or temporary influences | It is not a direct measurement of diet quality, and abnormal findings may require follow-up testing |
| Complete Blood Count with Differential and Platelets | Red blood cells, hemoglobin, hematocrit, white blood cells, and platelets | May identify blood-count patterns associated with anemia, infection, inflammation, or other abnormalities | Low hemoglobin or hematocrit may indicate anemia | A CBC does not identify the cause of anemia by itself |
| Ferritin, Iron and TIBC Panel | Stored iron, circulating iron, total iron-binding capacity, and iron saturation | Helps evaluate iron availability, transport, and storage | Low ferritin may suggest depleted iron stores; high ferritin has several possible causes | Ferritin may rise with inflammation, infection, liver disease, or iron overload |
| Vitamin B12 and Folate Panel Test | Vitamin B12 and folate concentrations | Relevant to red blood cell production, neurological health, and restrictive diets | Low values may indicate inadequate intake, impaired absorption, or deficiency | Serum vitamin B12 can sometimes be difficult to interpret; additional testing may be appropriate when results are borderline |
| TSH Test | Thyroid-stimulating hormone | Thyroid dysfunction can affect energy, weight, heart rate, and cholesterol | High or low TSH may suggest altered thyroid function | TSH should be interpreted with symptoms, medications, pregnancy status, and additional thyroid tests when appropriate |
Ulta Lab Tests offers individual heart, metabolic, blood, thyroid, and nutrient tests. Exact test selection should be based on personal history, symptoms, dietary pattern, previous results, medications, and guidance from a qualified healthcare provider.
A foundational testing discussion may include:
These tests provide information about cholesterol, triglycerides, average glucose, blood cells, liver and kidney markers, and electrolyte balance. They do not provide a complete cardiovascular evaluation and are not automatically necessary for every person at every interval.
Depending on family history, existing risk factors, and previous results, a healthcare provider may discuss:
Advanced markers can add useful context in selected situations, but ordering every available cardiovascular test may create unnecessary cost or confusing incidental findings.
Persistent fatigue, weakness, reduced exercise tolerance, pale skin, tingling, heavy menstrual blood loss, gastrointestinal disease, restrictive eating, or possible thyroid symptoms may support consideration of:
Additional testing may be appropriate when initial results are inconclusive or when a person has specific risk factors. Testing should remain targeted and patient-centered rather than assuming that everyone needs every available test.
Repeat testing may be useful after a sustained dietary change, meaningful weight change, medication adjustment, newly identified abnormality, or healthcare-provider recommendation. The appropriate interval depends on the marker, degree of abnormality, treatment plan, symptoms, and personal risk—not a universal calendar.
A reference range shows the interval expected in most people tested using a particular laboratory method. A value outside that range is not automatically proof of disease, and a value inside the range does not guarantee ideal health.
Several factors can influence laboratory results:
The term “optimal range” is sometimes used in wellness content, but an optimal target should not replace established clinical guidance. Cholesterol and glucose goals may differ significantly for a healthy young adult, a person with diabetes, and someone with established cardiovascular disease.
Trends are often more informative than isolated values. Whenever possible, compare results collected under similar conditions and review meaningful changes with a qualified healthcare provider.
Ulta Lab Tests allows patients to order many laboratory tests directly online where available. Pricing is displayed before purchase, insurance is not required, and HSA or FSA payment may be available when eligible.
Testing is performed through established laboratory networks such as Quest Diagnostics where applicable. Results are delivered through a secure online account and can be shared with a healthcare provider for interpretation and follow-up discussions.
Direct access can make baseline and follow-up testing more convenient, but it does not replace medical evaluation, emergency care, or individualized guidance from a physician, registered dietitian, or other qualified healthcare professional.
Explore heart and cardiovascular lab tests from Ulta Lab Tests.
Preparation requirements vary by test. Before visiting the laboratory:
The Mediterranean and DASH diets are among the most strongly supported heart-healthy eating patterns. Both emphasize vegetables, fruit, whole grains, beans, nuts, fish or lean proteins, and unsaturated fats while limiting excess sodium, added sugar, processed meat, and saturated fat. The best choice is usually the pattern a person can sustain while meeting individual medical, cultural, financial, and nutritional needs.
A Mediterranean or DASH-style diet generally provides a strong combination of heart-supportive foods and reliable energy sources. Meals should include fiber-rich carbohydrates, protein, and healthy fats rather than relying primarily on sugary drinks, refined grains, or highly processed snacks. Persistent low energy despite adequate food, sleep, and hydration may warrant evaluation for anemia, thyroid dysfunction, glucose abnormalities, nutrient deficiency, or another health concern.
Neither diet is universally better. The Mediterranean diet emphasizes olive oil, plant foods, and fish, while DASH provides more specific food-group and sodium targets and often includes more low-fat dairy. DASH may be especially practical for people focused on blood pressure, while Mediterranean eating may appeal to those who prefer a flexible, plant-forward pattern. Both can be adapted to support cardiovascular health.
A plant-forward diet may support heart health when it emphasizes vegetables, fruit, beans, lentils, whole grains, nuts, seeds, and unsaturated oils. It is not automatically healthy when dominated by refined carbohydrates, sugary foods, salty packaged foods, or highly processed substitutes. Fully vegan diets require a reliable source of vitamin B12 and careful planning for iron, protein, iodine, calcium, zinc, vitamin D, and omega-3 fats.
Not every ketogenic diet produces the same result. Some people experience improvements in weight, triglycerides, or glucose, while others develop substantial increases in LDL cholesterol. A pattern high in butter, processed meat, fatty meat, and coconut oil is less consistent with heart-health guidance than one emphasizing vegetables, fish, nuts, seeds, avocado, and olive oil. Laboratory monitoring and professional guidance may be appropriate.
A Lipid Panel Test is a common starting point. Depending on personal risk, family history, and previous results, an Apolipoprotein B Test, Lipoprotein (a) Test, hs-CRP Test, Hemoglobin A1c Test, and kidney or metabolic markers may add useful information. Blood tests do not directly show whether a coronary artery is blocked.
Common starting tests may include a Complete Blood Count with Differential and Platelets, Comprehensive Metabolic Panel, TSH Test, Ferritin, Iron and TIBC Panel, Vitamin B12 and Folate Panel Test, and Hemoglobin A1c Test. Fatigue has many possible causes, so normal laboratory results may not end the evaluation.
Low iron stores may contribute to symptoms in some people before hemoglobin falls sufficiently to meet the criteria for anemia. A Ferritin, Iron and TIBC Panel provides information about stored iron, circulating iron, binding capacity, and iron saturation. Ferritin may also rise because of inflammation, infection, liver disease, or other conditions, so results should be interpreted together.
Vitamin B12 supports normal blood and nerve function, and deficiency can contribute to fatigue or weakness. However, taking extra vitamin B12 does not generally boost energy in people who already have adequate vitamin B12 status. People following vegan diets, using certain medications, living with gastrointestinal disorders, or having undergone certain stomach or intestinal surgeries may have an increased risk of deficiency.
There is no single retesting schedule for everyone. Some cholesterol or glucose markers may be reassessed after a sustained period of lifestyle change, while nutrient or thyroid follow-up depends on the initial result and clinical plan. Retesting too soon may show routine biological variation rather than a meaningful change. Discuss the appropriate timing with a qualified healthcare provider familiar with your health history.
Ulta Lab Tests allows consumers to order many laboratory tests directly online where available. You can review pricing, select tests, visit an affiliated collection location, and receive secure online results. Direct ordering does not replace professional interpretation. Abnormal results, persistent symptoms, or significant cardiovascular risk should be discussed with a qualified healthcare provider.
The best diets for heart health are flexible, sustainable eating patterns built around vegetables, fruit, whole grains, beans, nuts, seeds, fish, lean or plant-based proteins, and unsaturated fats. Mediterranean and DASH-style diets provide strong starting frameworks, while pescatarian and well-planned vegetarian diets can also support cardiovascular health and steady energy.
Nutrition is only one part of the picture. Cholesterol, glucose regulation, blood pressure, iron status, vitamin B12, thyroid function, sleep, activity, medications, and genetics can all influence how a person feels and their long-term cardiovascular risk.
Explore heart and cardiovascular testing through Ulta Lab Tests to establish a baseline or monitor selected biomarkers. Laboratory results are informational and should be reviewed with a qualified healthcare provider before making medical, medication, or supplement decisions.
Definition: The best diets for heart health and steady energy are sustainable eating patterns that emphasize vegetables, fruits, whole grains, legumes, nuts, seeds, fish, lean proteins, and unsaturated fats. Mediterranean and DASH-style diets are leading examples because they support cardiovascular nutrition while providing balanced sources of carbohydrates, protein, fat, fiber, vitamins, and minerals.
Related laboratory tests: Lipid Panel Test, Apolipoprotein B Test, Lipoprotein (a) Test, hs-CRP Test, Hemoglobin A1c Test, Comprehensive Metabolic Panel, Complete Blood Count with Differential and Platelets, Ferritin, Iron and TIBC Panel, Vitamin B12 and Folate Panel Test, and TSH Test.
How Ulta Lab Tests helps: Ulta Lab Tests provides direct online access to many heart, metabolic, blood, thyroid, and nutrient tests with transparent pricing and secure online results.
Disclaimer: Laboratory testing provides health information but does not replace diagnosis, treatment, or individualized advice from a qualified healthcare provider.
These pages cover foundational lipids, ApoB-containing particles, inherited Lp(a), and high-sensitivity C-reactive protein.
The live Ulta pages identify these as tests for longer-term glucose exposure and broader metabolic, electrolyte, kidney, and liver markers.
These tests are relevant to the article’s discussion of red blood cells, hemoglobin, iron storage, iron transport, fatigue, and reduced exercise tolerance.
The panel measures vitamin B12 and folate, nutrients relevant to normal red blood cell production and neurological function.
The TSH page relates thyroid regulation to metabolism and thyroid health, making it relevant to persistent fatigue and unexplained energy changes.
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