Tuna, like many other larger predatory fish such as shark, king
mackerel, tilefish and swordfish, contains high levels of
mercury. White albacore contains the most mercury, while other
options, such as chunk light tuna, are looked at as better
alternatives. Mercury, often derived from human industrial
activity such as coal-fired electricity generation, finds its
way into our streams and rivers, which ultimately feed into our
oceans. High levels of mercury in the human body can lead to
mercury poisoning, extremely detrimental for not only women and
children, but grown men. Overdose can lead to neurological or
heart problems. Image Credit: Getty Images