Mercury adversely affects the central nervous system in young children and fetuses. All other people are recommended to limit their consumption of freshwater fish to no more than four meals per month. To further limit one's exposure to mercury, people can eat smaller, younger fish instead of larger, older ones. Mercury accumulates in fish tissue over time. Although these guidelines have been issued, the public is encouraged to continue eating fish as part of a healthy diet.
Fish are high in protein and low in saturated fat and cholesterol compared to meat or poultry.