Unfortunately breasts do not come with markers on them. When you are an exclusively breast-feeding mom you never really know how much your baby is getting. We teach in lactation to watch for the signs that tell you your baby is getting enough milk. You look at swallowing patterns, wet diapers, and the overall health and weight gain of your baby. When you are pumping mom though, we are meticulous in knowing how much milk comes out of our tatas. Have you ever actually stopped and looked at that milk? I’m sure you have. I’m sure you analyze every drop that comes out of your body. Did you know that the left and right breast can make different amounts of milk? One research study found that stereotypically moms always make more milk out of the right breast. Which is interesting in light of the fact that most women have a slightly larger left breast. (Click on text to read the research articles) It really goes to show that size does not matter for production. Size is related to fat in the breast tissue and not the actual glandular tissue that produces milk. I love breastfeeding. And I try really hard to rotate which side I start on when I’m breast-feeding my daughter. When I am at work or use a double pump to pump both of the girls at the same time. It has been always consistent for me. My right always make slightly more than my left. Usually not very much more, but enough to be noticeable. And science still doesn’t really know why!! Oh, our fascinating bodies!!! Happy Pumping!!!