Tuna — starting solids

Overview

Tuna is a fish and a priority allergen. Fish can be introduced with other complementary foods around 6 months. Offer well-cooked tuna as a single new food. If your baby has severe eczema or a prior immediate food allergy, talk with a clinician before introducing highly allergenic foods.

Preparation

Remove all bones, skin, and fat before cooking. Cook tuna thoroughly until it is soft enough to mash easily with a fork, then mash, puree, or flake into small pieces. Never offer large firm chunks or bones. Always supervise eating.

Three-step introduction

Step 1: First tiny taste

Offer a small taste of well-cooked mashed or finely flaked tuna. Watch for concerning symptoms such as hives, swelling, vomiting, or breathing trouble, and seek urgent care if those occur.

Step 2: Larger offer

If the first taste was tolerated, gradually offer a larger amount of the same prepared tuna at a later feed.

Step 3: Include regularly

If tolerated, keep well-cooked tuna in the diet routinely as part of complementary feeding.

FAQ

When are babies usually ready for solid foods?

Complementary foods are typically introduced around 6 months of age, when the baby shows developmental readiness (for example, sitting with support, good head control, and swallowing food rather than pushing it out). Introducing solids before 4 months is not recommended.

When can tuna be introduced?

Once your baby is ready for solid foods (typically around 6 months), fish can be introduced with other complementary foods. There is no evidence that delaying common allergens such as fish prevents allergy.

How should I prepare tuna for a baby?

Remove all fat, skin, and bones from fish before cooking. Cook until soft enough to mash easily with a fork, then mash, puree, or flake into small pieces. Always supervise eating.

Is tuna a lower-mercury fish?

Choose fish lower in mercury. Yellowfin tuna is listed among FDA/EPA Good Choices. This is not the same as canned light tuna, which is a Best Choice, or bigeye tuna, which should be avoided. Avoid fish that are high in mercury, such as king mackerel, shark, swordfish, and bigeye tuna. This is educational guidance — follow your clinician’s advice if you have questions about your child’s diet.

What if my baby has severe eczema or a prior food allergy?

If your baby has severe, persistent eczema or had an immediate allergic reaction to a food — especially a highly allergenic food — talk with your child’s pediatrician about how and when to introduce highly allergenic complementary foods such as tuna and other fish.