Did you see the research data from PWH last week ?? around 80% of newborn baby (pool size over 1000) had abnormally high lead level! their conclusion is the pregnant mother eat too much fish, esp sea fish which you know.. the water around HK is heavily polluted. Their suggestion is, eat smaller fish (not large one) and no tuna fish!!!
anyway, I cant really eat fish now.. may be later I can eat some, but now, I bought some fish oil as supplement.
so.. when DHA make your baby more clever, the lead (fr fish) counter the effect. be careful when you choose the fish you eat!