The longer the time between feeds, the more diluted the leftover milk becomes. This 'watery' milk has a higher lactose content and less fat than the milk stored in the milk-making cells higher up in your breast.
Is watery breast milk good for your baby? In a word, yes. Both fatty milk and watery/less fatty milk are good for your baby, and it's important that your baby gets both. (Think about when you're eating a meal – most of the time, you want both substance to fill you up and a drink to stay hydrated.
You may notice your milk seems thicker and creamier towards the end of a feed. This is because, as the feed progresses, the fat composition gradually increases due to the mechanics of milk moving through the breast. It's often referred to as hindmilk, while the first more 'watery' milk is known as foremilk.
Fat content increases gradually as the breast becomes emptier, as fat globules are “forced” out of the breast by successive milk ejections. A longer feed interval means lower initial fat content at the start of the next feed, because fat adheres to the alveoli/ducts while milk stands in the breast between feeds.
Light green: Consistent green stools in a breastfed baby can indicate an imbalance of foremilk/hindmilk. Foremilk is the low-calorie milk that comes first in a feeding.
By offering the other breast when the first is finished, and repeating breast compressions if needed, your baby will get the correct balance of foremilk and hindmilk automatically. Using both breasts when needed (and sometimes three or four!) will drive up and maintain your supply.
Breast milk is typically white with a yellowish or bluish tint, depending on how long you've been breastfeeding. But the hue can change based on many different factors, and most of the time, a new color of breast milk is harmless.
Thickeners are not recommended for babies who are healthy and growing well. It has been hypothesised that rather than thickening feeds and making them sit in the stomach for longer, it may actually be better to have liquid move through the stomach more quickly.
The milk production and amount of fat content of milk can vary during a pumping session and at different times of the day. If the baby doesn't get enough fat, he or she may have trouble gaining weight. Fat in mothers' milk can be increased to help babies grow.
If you see bright green and frothy poop in your baby's diaper that almost looks like algae, they're probably getting too much foremilk – the low-calorie milk that comes first in a feeding – and not enough hindmilk, the higher-fat, super-nutritious stuff that comes near the end.
If your baby does not breastfeed long enough at each feeding, they may not get enough breast milk, and they certainly won't get enough hindmilk. Another issue that can prevent your baby from getting enough hindmilk is overabundant milk supply.
How long should a baby nurse to get hindmilk? After about 10 to 15 minutes of breastfeeding, the milk flow slows and transitions to the sweet and creamy hindmilk, which contains vitamins A and E, and has more fat and calories than foremilk.
If on the fifth day, baby's stools turn green instead of yellow, as in the case of oversupply, this may be a sign that baby can't drain the breast well enough to get past the low-fat/high sugar foremilk. In this case, though, a health or anatomy issue (like tongue tie) may be the cause.
Foremilk is the milk that flows out of your breasts at the beginning of a pumping session, while hindmilk is the milk from the end of a session.
Kissing your baby will change your breast milk
When you kiss your baby, you are sampling the pathogens on her skin, which are then transferred to your lymphatic system where you will produce antibodies to any bugs. These antibodies will then pass through your breast milk to your baby and boost her immune system.
To put a number on it, it usually takes about 20 to 30 minutes after feeding to generate enough milk for your baby, and about 60 minutes to replenish fully. The more often your baby feeds, and the more they empty your breasts, the more milk your body will produce.
Sugar prevents microorganisms from growing in the milk and helps to thicken it even further—it's added after the milk has been boiled, reduced, and effectively pasteurized.
To prevent adverse reactions in the baby while breastfeeding, it's recommended to avoid consuming citrus fruits, cherries, and prunes. Citrus fruits have been associated with digestive problems, fussy behavior, vomiting, and diaper rash in breastfed babies.
To get the nutrients you need while breastfeeding, follow a healthy eating routine [PDF - 1.9 MB]. Choose a mix of healthy foods you enjoy from each food group, including: Whole fruits — like apples, berries, oranges, mango, and bananas.