TT – It is a common concern for breastfeeding mothers to notice their milk supply suddenly “tanking” just as their monthly cycle returns. While this can be alarming, a temporary dip in production is a normal physiological response to shifting hormones.
Why Supply Decreases During Your Period
The primary cause of a mid-cycle or pre-period supply drop is the fluctuation of key hormones:
- Hormonal Shifts: After ovulation, estrogen and progesterone levels rise, while prolactin (the milk-making hormone) may temporarily decrease. These shifts can interfere with how effectively your body produces milk.
- Calcium Levels: Blood calcium levels often drop mid-cycle. Since calcium plays a role in milk production, this deficiency can lead to a noticeable decrease in volume.
- Fluid Retention: While you may feel bloated and full, your body might actually be hiding a need for more hydration. Dehydration during your period can further lower milk production.
- Taste Changes: Hormonal changes can increase sodium and chloride levels in your milk while decreasing lactose, making it taste saltier and less sweet. This can lead to a “fussy” baby who refuses the breast, further impacting supply through reduced demand.
How to Maintain Your Supply
The good news is that these dips are usually temporary (lasting 2–4 days before bleeding starts and a few days after) and your supply will typically rebound. To manage this phase:
- Take a Calcium-Magnesium Supplement: Many lactation experts suggest taking a combined calcium and magnesium supplement (e.g., 500mg calcium/250mg magnesium to 1000mg/500mg) from ovulation through the first few days of your period to help maintain supply.
- Increase Nursing Frequency: Respond to your baby’s cues and nurse on demand. Frequent milk removal signals your body to keep production high.
- Try “Power Pumping”: To mimic cluster feeding, try power pumping for an hour once a day (20 mins on, 10 mins off, 10 mins on) to signal for more milk.
- Stay Hydrated and Eat Well: Drink plenty of water and incorporate lactogenic foods like oats, almonds, and leafy greens.
- Skin-to-Skin Contact: Cuddling your baby can stimulate oxytocin, which helps with milk let-down and production.
If you are concerned about your baby’s weight gain or if your supply does not return after your period ends, consider consulting a lactation specialist or your healthcare provider.
This is for informational purposes only. For medical advice or diagnosis, consult a professional.
