So, to answer your burning question: How often can I eat shrimp? The answer is: as often as you want, within reason. Twice a week is ideal, three times is fine, and once in a while, you can go full-on shrimp boat captain and have it four times if the mood strikes.
Your mom might tell you “everything in moderation,” but she probably never tasted shrimp tacos with mango salsa. You do you, shrimp friend.