After nine months of pregnancy, labour, and all the weird and wonderful things that come along with it, the last thing you would expect to ask yourself is: Why is my breast milk blue?

Your breast milk might be perfectly fine until one day when it just changes colour. Paying close attention, you will notice that your milk will seem to take on different colours, and even different textures, during your breastfeeding experience.

The colour of your breast milk will change sometimes depending on the food you are eating, dyes in drinks, medication, and a few other factors, but slightly coloured breast milk is mostly completely harmless.

Here are some explanations on why your milk might be slightly coloured.

Why Is My Breast Milk Blue?

Blue Milk or Clear Milk

Breast milk can often appear blue or clear and will seem watery in consistency. This is often just the foremilk, which is the first bit of milk that is released when you begin pumping or nursing. It is thinner than normal breast milk and has a lower fat content than the milk released near the end of pumping or nursing, which is thicker and creamier.

Yellow Milk

There are a few reasons why your milk might have a bit of a yellow hue. It could just be colostrum, which is the first milk you produce after childbirth, which is highly-concentrated and incredibly nutritious. Colostrum is thick and is yellow in colour, but it is only there for a few days until your milk comes in.

Green Milk

Green milk is often a result of your diet. It could be an increase in green vegetables such as spinach, kale, and seaweed. Other than vegetables, food dyes, and drinks, such as Gatorade, can give your breast milk a green colour.

Red Milk or Pink Milk

At some point during breastfeeding, moms will notice their milk has a red or pink tint, and this can be caused by a few different factors.

One reason might again be from dyes in food, snacks, or drinks. It could also be from food with natural dyes such as beetroot.

Any red or pink in your milk might also be from a small amount of blood in the milk. While this doesn’t seem so great, it isn’t too bad. It usually happens when there is a small rupture of a blood capillary or from cracked, dry nipples. Any blood in your milk is not harmful to your baby, and it is still fine to drink. However, if there is an increase of red or pink from blood in your breast milk, play it safe and get in touch with your doctor.

Rainbow Coloured Milk

Rainbow Colored Milk

Breast milk really is such an incredible substance. It contains absolutely everything your baby needs for the first few months of their lives. It even helps them fight off germs and viruses! One more incredible factor of breast milk is that it can take on different colours, and even different textures. This is all safe for your baby and is usually a result of your diet!


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