5. Atlantic Mackerel
Atlantic mackerel should not be confused with king mackerel as these are two different types of fish. Atlantic mackerel makes the list for healthy vitamin B12 sources because it offers a high amount of vitamin B12 and also has a good amount of omega-3s, which as mentioned before is very important. Just 3 ounces of Atlantic mackerel contains 7.4 micrograms of vitamin B12, which is over one hundred percent of the recommended daily value of the vitamin for the average person.
Another important factor regarding the Atlantic mackerel is that it has low mercury content. When you are adding fish to your diet it is important to consider the amount of mercury that it contains as too much mercury in your system can make you ill. In addition, it is also important to consider the sustainability of the fish.