Foods high in Lysine

Why Lysine matters

Lysine is one of the nine essential amino acids — your body cannot synthesize it, so it must come from food. It is a building block for collagen, supports calcium absorption, and is required for carnitine synthesis (the molecule that shuttles fatty acids into mitochondria for energy). Animal proteins (meat, poultry, fish, eggs, dairy) are naturally lysine-rich. Among plants, legumes (lentils, beans, chickpeas, soy), quinoa, amaranth, and pistachios supply meaningful amounts, while most grains are low. This is why traditional plant-based food pairings — beans with rice, hummus with pita, dal with roti — combine a lysine-rich legume with a lower-lysine grain to provide a complete amino acid profile in one meal.

Daily intake reference

Signs of low intake

Frank lysine deficiency is uncommon in developed countries but can occur in predominantly grain-based diets (especially wheat-heavy vegan diets with few legumes). Signs include fatigue, nausea, dizziness, slow growth in children, anemia, and reproductive issues. Because lysine is also involved in immune function, chronically low intake may contribute to more frequent infections. Endurance athletes, people recovering from burns or surgery, and anyone following a restrictive plant-based diet without attention to legumes should monitor intake.

Best for these diets

Lysine is abundant in these dietary patterns:

• High-protein
• Mediterranean
• vegan
• Paleo