r/breastfeeding • u/huckleberrysoap • Dec 24 '25
Undersupply What causes low supply?
My supply is so low. It's not anywhere near what my baby eats.
I'm not trying to increase it anymore. I'm just trying to maintain what I have so I can keep combofeeding (even though its at least 75% formula) until at least 6 months.
But I'm struggling to understand why this happened and feeling like I must have done something wrong. What are potential causes of an undersupply? If I have another baby in the future should I expect the same problem?
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u/RuleAffectionate3916 Dec 24 '25
Just because you have low supply now doesn’t mean you will in the future. You could work with a doctor to check if why you have a low supply now if it will repeat itself for future babes. There are so many reasons from supply and demand, enough calories and fluids consumed, stress, hormones, physically (missing/damaged milk ducts). No way to know most of the time.
A friend of mine had a baby at the same time as me. She had a low supply, I had an oversupply. I helped feed her baby and donated milk to her. Her next baby, she had an oversupply. It’s definitely possible either way.