The safe frequency for eating tuna depends on the type of tuna, body weight, age, and whether an individual is pregnant or breastfeeding. For most adults:
- Canned light tuna (lower in mercury) can be eaten 2 to 3 times per week, with a serving size of around 4 ounces.
- Canned albacore (white) tuna contains more mercury and is advised to be consumed only once per week, about a 4-ounce serving.
For children and pregnant or breastfeeding individuals:
- Children under 11 should limit to 2 servings per week of canned light tuna, with serving sizes varying by age.
- Pregnant or breastfeeding people may have 2 to 3 servings per week of canned light tuna and only one serving per week of albacore or yellowfin tuna.
Daily consumption is generally not recommended due to mercury exposure risks, though eating canned light tuna daily in moderation is considered safe for most adults who are not pregnant or breastfeeding. Overall, variety in fish consumption and moderation is recommended to avoid mercury poisoning risks such as neurological symptoms.