Evidence-based nutrition, in plain English — every entry sourced from clinical research.

Heart Health

Foods for heart health: salmon, oats, walnuts, avocado, tomatoes and garlic

Heart Health

Cardiovascular health is best supported by whole dietary patterns, not single superfoods.

Key compounds

The evidence base for this goal focuses on several well-studied compounds.

  • Lycopene — Lycopene is the carotenoid behind the deep red of a ripe tomato, and one of the most efficient antioxidants in the plant kingdom. Unusually, it becomes
  • Omega-3 — Omega-3s are a family of essential polyunsaturated fats the body cannot make in meaningful amounts, so they must come from the plate. The two with the
  • Potassium — Potassium is the body’s principal intracellular electrolyte, quietly partnering with sodium to manage fluid balance, nerve signals and every heartbeat. Most of us fall short of

Best foods for this goal

The foods below are good practical choices.

Salmon (Atlantic)

Nutrition Facts
Per 100 g, edible portion · values per 100 g
Calories 197
Total Fat 13.1 g
Saturated Fat 2.28 g
Sodium 49.5 mg
Potassium 378 mg
Total Carbohydrate 0 g
Dietary Fiber 0 g
Total Sugars 0 g
Protein 20.3 g
Omega-3 EPA & DHA, vitamin D, vitamin B12, selenium
Source: USDA FoodData Central (FDC 2684441); sugars: FDC 175167

Oats

Nutrition Facts
Per 100 g, edible portion · values per 100 g
Calories 379
Total Fat 6.52 g
Saturated Fat 1.11 g
Sodium 6 mg
Potassium 362 mg
Total Carbohydrate 67.7 g
Dietary Fiber 10.1 g
Total Sugars 0.99 g
Protein 13.15 g
Manganese, phosphorus, magnesium, beta-glucan fibre
Glycemic index: 55
Source: USDA FoodData Central (FDC 173904)

Walnuts

Nutrition Facts
Per 100 g, edible portion · values per 100 g
Calories 730
Total Fat 69.7 g
Saturated Fat 6.05 g
Sodium 0 mg
Potassium 424 mg
Total Carbohydrate 10.9 g
Dietary Fiber 5.21 g
Total Sugars 2.61 g
Protein 14.6 g
Copper, manganese, plant omega-3 (ALA)
Glycemic index: 15
Source: USDA FoodData Central (FDC 2346394); sugars: FDC 170187

Avocado

Nutrition Facts
Per 100 g, edible portion · values per 100 g
Calories 160
Total Fat 14.66 g
Saturated Fat 2.126 g
Sodium 7 mg
Potassium 485 mg
Total Carbohydrate 8.53 g
Dietary Fiber 6.7 g
Total Sugars 0.66 g
Protein 2 g
Folate, vitamin K, vitamin E, potassium
Glycemic index: 15
Source: USDA FoodData Central (FDC 171705, Avocados raw all commercial varieties)

Tomato

Nutrition Facts
Per 100 g, edible portion · values per 100 g
Calories 18
Total Fat 0.2 g
Saturated Fat 0.03 g
Sodium 5 mg
Potassium 237 mg
Total Carbohydrate 3.89 g
Dietary Fiber 1.2 g
Total Sugars 2.63 g
Protein 0.88 g
Vitamin C, potassium, lycopene, vitamin A
Glycemic index: 30
Source: USDA FoodData Central (FDC 170457)

Garlic

Nutrition Facts
Per 100 g, edible portion · values per 100 g
Calories 143
Total Fat 0.38 g
Saturated Fat 0.1 g
Sodium 17 mg
Potassium 401 mg
Total Carbohydrate 28.2 g
Dietary Fiber 2.7 g
Total Sugars 1 g
Protein 6.62 g
Manganese, vitamin B6, vitamin C, allicin
Glycemic index: 30
Source: USDA FoodData Central (FDC 1104647)

Practical takeaways

Focus on consistency, variety and the overall dietary pattern. Smaller daily choices tend to outperform occasional large changes.

Common questions

Is one compound enough? Rarely. Whole foods and dietary patterns usually outperform single-compound strategies.

How fast can diet change inflammation or blood markers? It depends on the marker, the starting diet and lifestyle factors. Expect gradual trends rather than overnight shifts.

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