Mackerel is one of the healthiest and cheapest proteins that you can get from almost any grocery store.  However, it can be useful to know exactly why mackerel is so good for you.  u003cbr/u003eu003cbr/u003eFirstly, mackerel is a great source of omega-3 fatty acids which can help protect you against developing dementia or Alzheimer’s.  u003cbr/u003eu003cbr/u003eMackerel also contains significant amounts of B-12 which is a vitamin that a lot of adults are deficient in, especially women.  It is a great source of protein too and boasts all 9 essential amino acids.  u003cbr/u003eu003cbr/u003eA concern when consuming a lot of fish in your diet is consuming high levels of mercury.  Thankfully, mackerel is actually low in mercury which means you can safely eat more of it.  u003cbr/u003eu003cbr/u003eFinally, mackerel has been shown to be beneficial in improving cardiovascular health and cognitive abilities.