Ditto. In my opinion low-carbing it a la Atkins is not a safe and effective way to lose weight. Here's what Kellymom has to say about breastfeeding and dieting, including Atkins:
http://www.kellymom.com/nutrition/mo...eightloss.html
I have lost 65 pounds since ds was born in August 2002, the bulk of it from Feb. 2003 on. I'm still nursing him. Ideally I'd like to lose 15 more before getting pregnant again, we'll see. Here's what I've done:
1) Started exercising, both strength training and cardio. I don't belong to a gym, I do it at home. The more you exercise, and build muscle, the more you will burn calories even at rest.
2) Like the PP said, cut down/out simple/refined carbs like white bread, white pasta, and potatoes, and refocused on whole grains and beans for carbs. I'm a vegetarian, and eat limited low fat dairy and eggs, but I try to make the bulk of my diet whole grains, beans, fruits, and veggies (both cooked and uncooked). I have treats every now and then but I don't drink soda or eat candy or chips - I save my indulgence calories for the good stuff like a small bowl of premium ice cream.
3) Joined a support group (the weekly weight loss thread at MDC!) It helps so much to check in every week; it motivates me to stick with it so I can have some progress to report, and when things aren't going well I get the encouragement I need not to give up!
4) Realized that it took me a long time to gain weight, and it's going to take the rest of my life to maintain a healthy weight by maintaining healthy habits. There are no quick fixes!
I highly recommend Walter Willet's book
Eat, Drink, and Be Healthy. It is evidence-based nutrition, based on big, long-term studies, and it makes so much sense.
HTH!