Breastfeeding has many health benefits for moms and babies. For example, breastfeeding will:

Help protect your baby from infection and illness
Give you and your baby time to be close and bond
Save your family money

Making healthy food choices while you're breastfeeding will help you and your baby get the nutrients you both need.

Most people can get all the nutrients they need by eating healthy foods. If you are worried about getting enough nutrients while breastfeeding, ask your doctor about taking a multivitamin.
Make your calories count.

To get the nutrients you need while breastfeeding, make sure to include these foods in your diet:

A variety of vegetables and fruits
Seafood, lean meats and poultry, eggs, beans, and unsalted nuts and seeds
Fat-free or low-fat milk or yogurt – or soymilk with added calcium
Brown rice, 100% whole-wheat bread, and other whole grains
Fortified cereals (cereals with added iron and folic acid)

Limit foods and drinks high in “empty calories” from added sugars and solid fats. Foods and drinks with lots of empty calories include desserts, snack foods, fatty meats, fried foods, and sugar-sweetened drinks.
Eat 8 to 12 ounces of seafood each week.

Fish and shellfish have nutrients that can help your baby see and learn better. Eat seafood 2 or 3 days a week. Be sure to include a variety of healthy choices, like:

Salmon
Catfish
Cod
Herring
Shrimp
Canned light tuna
White (albacore) tuna – no more than 6 ounces a week

Avoid fish that are high in mercury, especially swordfish, tilefish, shark, and king mackerel. Mercury is a metal that can hurt your baby’s development.
Drink plenty of fluids.

Your body needs extra fluids, like water and fat-free or low-fat milk, when you are breastfeeding.

Try drinking a glass of water every time you breastfeed.
Limit or avoid drinks that are high in caffeine or added sugars.

If you choose to drink alcohol, follow these safety tips. http://ourhealthyblog..com/2016/08/eat-healthy-while-breastfeeding.html