Are there some things mom should avoid eating if breastfeeding?

See below:: Shark, swordfish, tilefish, king mackerel should be avoided due to high mercury content. Fresh water fish that come from places that are known to be contaminated. Artificial sweeteners like saccharin. Alcohol is allowed in small amounts.Coffee (limit to two cups a day) or other caffeinated foods and drink. Processed foods with numerous additives.