What foods and drinks should I limit or avoid while breast-feeding?

Certain foods and drinks deserve caution while you're breast-feeding. For example:

• Alcohol. There's no level of alcohol in breast milk that's considered safe for a baby. If you drink, avoid breast-feeding until the alcohol has completely cleared your breast milk. This typically takes two to three hours for 12 ounces (355 milliliters) of 5% beer, 5 ounces (148 milliliters) of 11% wine or 1.5 ounces (44 milliliters) of 40% liquor, depending on your body weight. Before you drink alcohol, consider pumping milk to feed your baby later.
• Caffeine. Avoid drinking more than 2 to 3 cups (16 to 24 ounces) of caffeinated drinks a day. Caffeine in your breast milk might agitate your baby or interfere with your baby's sleep.
• Fish. Seafood can be a great source of protein and omega-3 fatty acids. Most seafood contains mercury or other contaminants, however. Exposure to excessive amounts of mercury through breast milk can pose a risk to a baby's developing nervous system. To limit your baby's exposure, avoid seafood that's high in mercury, including swordfish, king mackerel and tilefish.