Holy Mackerel! Well, I’m not sure about “Holy” but it certainly is good for you! The list of good stuff this small fish contains is astounding. Mackerel contains the Vitamins B1, B2, B3, B6 and B12! That’s a big energy boost, not to mention the immune support! On top of these vitamins Mackerel also is a good source for Magnesium, Potassium, Phosphorus, Selenium, Iodine, Protein and Omega 3 Fatty Acids. Omega 3 Acids can help with brain function, promote healthy joints and skin and even help to reduce cholesterol. Maybe this little fish is Holy after all?