There's debate whether the seafood community if farm raised or wild caught fish is better or healthier for you. While the farm raised fish will not carry a risk of parasitic worms, they may expose you to an increase in the manmade toxins. Bottom line, choose smaller fish when you order sushi so your risk of consuming contaminants is lower. Dr. Dempsey also recommends asking the sushi restaurant where their sources for their seafood. I'm sure they'll love hearing that