What's the whole deal with tuna & mercury? tunas the only protein source i eat but was told not more than one can a week cuz of mercury.. plz explain!

See below: The mercury released into the environment, in part from burning coal, accumulates in animals and get concentrated in top predators like tuna. See below for suggestion on nutrition and consult this article for more info: http://www.consumerreports.org/cro/magazine-archive/2011/january/food/mercury-in-tuna/overview/index.htm?loginMethod=auto For good health - Have a diet rich in fresh vegetables, fruits, whole grains, milk and milk products, nuts, beans, legumes, lentils and small amounts of lean meats. Avoid saturated fats. Drink enough water daily, so that your urine is mostly colorless. Exercise at least 150 minutes/week and increase the intensity of exercise gradually. Do not use tobacco, alcohol, weed or street drugs in any form. Practice safe sex.