According to Health Canada, the recommendations for Canned Albacore (White) Tuna Advice is: - Pregnant Women - 300 grams a week  - Children 5-11 years old - 150 grams a week  - Children 1-4 years old - 75 grams a week  This does not apply to canned LIGHT tuna which is lower in mercury so there is not a big concern. This is why I always choose canned LIGHT tuna.