Step 1: First tiny taste
Offer a small taste of well-cooked mashed or finely chopped crab. Watch for concerning symptoms such as hives, swelling, vomiting, or breathing trouble, and seek urgent care if those occur.
Crab
Overview
Crab is a crustacean shellfish and a priority allergen. Shellfish can be introduced with other complementary foods around 6 months. Offer well-cooked crab 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 the shell. Cook crab thoroughly until the meat is opaque, then mash, puree, or finely chop into small pieces. Do not offer whole crab legs or round whole chunks to young infants. Always supervise eating.
Three-step introduction
Step 2: Larger offer
If the first taste was tolerated, gradually offer a larger amount of the same prepared crab at a later feed.
Step 3: Include regularly
If tolerated, keep well-cooked crab 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 crab be introduced?
Once your baby is ready for solid foods (typically around 6 months), shellfish can be introduced with other complementary foods. There is no evidence that delaying common allergens such as shellfish prevents allergy.
How should I prepare crab for a baby?
Remove the shell. Cook until the meat is opaque, then mash, puree, or finely chop into small pieces. Do not offer whole crab legs or large chunks to young infants. Always supervise eating.
Is crab a lower-mercury seafood?
Yes. Choose seafood lower in mercury. Crab is listed among FDA/EPA Best Choices. 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.
Sources
- WHO Guideline for complementary feeding of infants and young children 6–23 months of age (2023)
- CDC — When, What, and How to Introduce Solid Foods
- FAO/WHO — Risk assessment of food allergens: Part 1 (Codex priority allergen list)
- FDA — Food Allergies (major food allergens / Big 9)
- AAP HealthyChildren — When to Introduce Egg, Peanut Butter & Other Common Food Allergens
- CDC — Infant and Toddler Nutrition FAQs
- CDC — Foods and Drinks to Avoid or Limit
- FDA/EPA — Technical information on advice about eating fish (Best Choices include crab)
- CDC — Zinc (Infant and Toddler Nutrition)
- USDA FoodData Central — Crustaceans, crab, alaska king, cooked, moist heat (FDC 174202)
- FDA — 21 CFR § 101.54 Nutrient content claims (good source / high)