You should moderate your consumption of these types of fish in sashimi, nigiri or otherwise. Mercury is a concern for most people when it comes to fish, but not all fish carry the same mercury risk. However, the statistics are different for the elderly, pregnant women and others with the compromised digestive system. How Often Can You Eat Sushi?Īccording to a registered dietician, healthy adults can safely consume 2-3 sushi rolls, which means 10-15 pieces of sushi per week. Sushi is just too good to resist, isn’t it? And, it’s easy to lose the count of how many you eat in a week when you want to have it every other day. If you are a big sushi fan, then you are probably guilty of having a date with King Crab Rolls or Smoked Salmon even three times a week.