Pregnant women who eat a lot of fish for a long time may cause mental retardation in their children

　　Pregnant women who eat a lot of fish for a long time will pass the mercury they take in through the placenta. fetus , may affect baby Postnatal intellectual development. therefore female Don’t eat too much fish during pregnancy. An average of 2 to 7 kilograms per month is considered moderate.

　　The two-year survey by researchers at the Chinese University of Hong Kong involved 1,000 newborn babies and their mothers. The survey results showed that 25% of babies had mercury levels in their blood and hair that exceeded standards, while 6% of mothers had mercury levels that exceeded standards.

　　“Even though the amount of mercury contained in fish meets safety standards, if pregnant women eat it excessively for a long time, the mercury will be passed to the fetus through the placenta. In addition, newborn babies have poor excretion ability, so mercury will easily accumulate in the body, which may affect the baby's brain development and cause mental retardation. ”researchers said.