A new study has uncovered which states have the most nutritional signature dishes—food that is regionally or culturally relevant to the particular state. And Washington has come out on top with oysters. The seafood dish scored highly for its micronutrients, especially its high levels of iron and vitamin C.

Full results of the study by Optibac, a maker of probiotic food supplements, is online at www.optibacprobiotics.com.

Optibac notes “a nutritionally balanced diet is important for maintaining optimal gut health” and recommends making sure most daily meals have a good balance of macronutrients, such as carbohydrates, healthy fats and protein, “alongside your micronutrients such as calcium and vitamins.”