Different types of mercury have different effects on the body because they are metabolized differently (http://www.atsdr.cdc.gov/toxprofiles/tp46.html). Both metallic mercury and methylmercury cause damage to the brain and kidneys.
Cooked shrimp can be refrigerated for up to 3 days. Flour: Can be stored for up to 6 months at room temperature because higher temperatures create a hospitable environment to bugs and mold. (Itâs not a bad idea to store it inside a plastic bag just to be safe in case you forget to throw it out in time.).
Considering that thawed shrimp was pre-cooked when purchased - â¦ and you do not know the exact conditions that the frozen shrimp was shipped and/or stored-it's wise to discard after 2 days.    Thawed cooked shrimp should be used within a few days-the earlier, the better.