Not sure about detox per se, but I had to have internal operation downstairs, which meant I had to do a 3 day bowel cleanse. I called a specialist with questions about the impact on breastfeeding, and they said it would be fine for my little one (4 months old, exclusively breastfed) but by day 3 (and for the next couple of days, as I was on fluid only for a while afterwards) my milk was so thin, it looked like cloudy water - WAY thinner than foremilk even.

I had actually expressed extra ahead of time, and so were were giving feeds of pre-pumped milk as well as the shockingly thin milk.

I wouldn't voluntarily go through something like that, if it was going to have that sort of impact on my milk.

But if it was a detox with lots of greens, fresh fish / lean chicken etc and the milk quality was still going to be good, I wouldn't have an issue - BUT I would want to find out whether a higher level of toxins get released through milk, ITMS