THE SCIENCE BEHIND BREAST MILK PRODUCTION

THE SCIENCE BEHIND BREAST MILK PRODUCTION

How Breast Milk Is Made:
Breastfeeding is a biological process, not a test of endurance or perfection. Milk supply is
adaptable, responsive, and supported by your body’s design. With frequent milk removal,
nourishment, and support, most mothers can establish and sustain a healthy supply.

DURING PREGNANCY (13 week of pregnancy), hormones prepare the breasts to make milk.
AFTER BIRTH –
 Hormone prolactin stimulates milk production
 Hormone oxytocin, causes the let-down reflex, allowing milk to flow.

WHY frequent feeding or pumping is so important, especially in the early weeks?

• The more milk is removed from the breast, the more milk your body is signaled to
  produce.
• If no sucking stimulation at breast, no signals are sent to the brain to produce the
  milk.
•  Breast milk production works on a supply-and-demand
   system.

What Controls Milk Supply?
Milk production is influenced by several key factors:

• Frequency of feeding or pumping – more often = more milk
•  Effective milk removal – good latch or proper pump use matters
• Hormones – stress and fatigue can interfere with oxytocin
• Maternal health – hydration, nutrition, rest, and overall wellbeing

Milk supply naturally adjusts to your baby’s needs over time.

Is The Early Days Matter

The first 2–6 weeks after birth are critical for establishing supply.

• Newborns typically feed 8–12 times in 24 hours
• Night feeds are especially important because prolactin levels are higher
• Engorgement or frequent feeding does not mean low supply—it’s often part of normal
  adjustment

Maintaining a Sustainable Milk Supply

To support ongoing milk production:

Feed or pump frequently

• Avoid long gaps, especially early on
• Aim to fully empty the breasts

Ensure a good latch

• A deep, comfortable latch improves milk transfer
• Seek help early if feeding is painful

Look after your body

• Eat balanced meals and drink to thirst (3 liters of water every 24 hours)
• Rest whenever possible
• Manage stress—calm helps oxytocin work better

Trust your body

• Soft breasts and cluster feeding are normal
•  Babies feed for comfort and growth, not just hunger

Cluster feeding

A normal, temporary, and exhausting, yet vital, phase in the first few days/weeks where newborns
feed intensely—sometimes hourly—to boost milk supply and satisfy growth spurts, often during
evenings. It signifies the baby is getting enough milk, not that you have a low supply

• Why it happens: Newborns have tiny stomachs and need frequent nourishment,
  especially as they grow rapidly, usually between day 1 and 3-4 months.
• When it happens; most common in the evening or early morning hours.
• Duration: Often lasts for a few hours at a time, particularly when establishing milk
  supply in the first few weeks. “DON’T STRESS ,IT WILL PASS”

COMMON MYTHS
❌ “Small breasts make less milk”
✔ Breast size does not determine milk production
❌ “You must feel full to have enough milk”
✔ Milk can be produced continuously, even when breasts feel soft
❌ “Frequent feeding means low supply”
✔ frequent feeding is how supply is built and maintained

When to Seek Support
Get help if you notice:

• Persistent pain or nipple damage
• Poor infant weight gain
• Very low wet diapers
• Concerns about supply despite frequent feeding

Lactation consultants, midwives, and healthcare providers can help early—support makes a big
difference.