Is it harmful to eat canned tuna often? I like tuna very much. Is it okay to eat once every two weeks?

Eating once every two weeks is not frequent, and eating canned tuna for a long time does not do much harm. Only because of its production, packaging, transportation and other reasons, nutrients (such as minerals, linoleic acid, etc.) will be lost to varying degrees. Therefore, it is recommended to eat fresh fish, especially deep-sea fish, while eating canned tuna.