Fish and shellfish are very keto-friendly foods. Salmon and other fish are rich in B vitamins, potassium and selenium, yet virtually carb-free.

However, the carbs in different types of shellfish vary. For instance, while shrimp and most crabs contain no carbs, other types of shellfish do.

While these shellfish can still be included on a ketogenic diet, it’s important to account for these carbs when you’re trying to stay within a narrow range.

Salmon, sardines, mackerel and other fatty fish are very high in omega-3 fats.

In addition, frequent fish intake has been linked to a decreased risk of disease and improved mental health.

Aim to consume at least two servings of seafood weekly.