Low carb while breastfeeding ??

Al

Hi everyone! I am sure this question has been asked before, but just wondering if a low-carb diet, like Atkins, is safe while breastfeeding? I have read theories such as when someone does a low-carb diet, toxins are released into the breastmilk, making it unsafe for the baby to drink? Also, is it harmful to milk supply as long as calorie intake is above 1500 calories per day? I know that losing more than 2lbs per week is not healthy for milk supply. My baby is now 7 weeks!! My supply is sensitive, anyway. However, I would love to lose the extra baby weight I am carrying (30lbs), but do not want to jeopardize my milk