3. Tuna fish
Tuna fish is usually served as steak and quite delicious to the palate. But tuna frequently absorbs mercury which is very harmful to the body. Mercury can damage the organs of the body and be very deadly to children and pregnant women if consumed in tuna. Consuming a single steak of tuna may not harm you, but consuming tuna fish frequently over a long period of time could cause deposits of mercury to build up on your body, causing organ damage.
