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Why Giving Water to Babies Under 6 Months Is a Risky Choice: A Nurse's Perspective

As a nurse who works with little babies daily and a mother of two young children, one of the most important messages I can share with you is the dangers associated with giving water a baby who under the age of 6 months. This is really a question that I get quite often and it is something that is SO important to understand. While it may seem harmless or even beneficial to give water to a thirsty or fussy infant, the reality is quite the different. In this post, I'll explain why water is not recommended for young babies, the potential risks and consequences involved, and give you some alternative feeding recommendations.


Why Water Is Not Recommended for Babies Under 6 Months:


First and foremost, it's super important to understand that breast milk or formula provides all the hydration a baby needs during the first six months of life. Both breast milk and formula contain the perfect balance of nutrients, including water, to keep your baby happy, hydrated and nourished. Introducing water too early can actually disrupt this balance and potentially harm your baby's health.

Baby on a blanket drinking water


Here are some reasons why water is not recommended for infants under 6 months:


  1. Risk of Malnutrition: Giving water to a young baby can fill their tiny stomachs without providing any essential nutrients, this leads to a lower intake of breast milk or formula. Think of it this way: baby’s tummy is full of fluid that has no fat or nutrients. They think they’re full but they haven’t really received any of what they need. This can result in malnutrition and failure to thrive, as water does not contain the essential fats, proteins, vitamins, and minerals necessary for healthy growth and development.

  2. Water Intoxication: Your baby's kidneys are not fully developed during the first few months of life, making it almost impossible to effectively process water. Over-hydration, also known as water intoxication, can occur when a baby consumes too much water, leading to a dangerous electrolyte imbalance. Think: when you have a stomach bug and all the good stuff is washed out – usually you will pick up a Rehydrate or a Powerade to replace these electrolytes. This imbalance can cause symptoms such as lethargy, seizures, and even life-threatening complications like cerebral oedema (swelling of the brain).

  3. Reduced Breastfeeding or Formula Feeding: Offering water to a young baby may cause them to nurse or bottle-feed less frequently, resulting in decreased milk production for breastfeeding mothers or reduced formula intake. This can compromise the baby's nutrition and overall health, as breast milk or formula is the primary source of calories and nutrients for infants.


Potential Risks and Consequences:


The risks associated with giving water to babies under 6 months extend beyond immediate health concerns. Parents should be aware of the potential long-term consequences, including:


  • Reduced weight gain and growth

  • Increased risk of infections and illness due to inadequate nutrition

  • Developmental delays and cognitive impairment

  • Electrolyte imbalances leading to seizures or other neurological complications

  • Disruption of breastfeeding or bonding between parent and child

Prepared bottles of baby milk


Alternative Feeding Recommendations:


So, what should you do if your baby seems thirsty or fussy between feedings? Instead of offering water, here are some alternative strategies to help keep your baby comfortable and hydrated:


  1. Breastfeed or offer formula on demand: Breast milk or formula should be the primary source of nutrition and hydration for infants under 6 months. Feed your baby whenever they show hunger cues, such as rooting, sucking on fists, or crying.

  2. Increase breastfeeding frequency: If your baby seems thirsty or fussy, try offering more frequent breastfeeding sessions to provide additional hydration and comfort.

  3. Offer a dummy: Sometimes babies may suck for comfort rather than hunger or thirst. Offering a dummy can help soothe your baby without the risk of overhydration.

  4. Monitor nappy output: Keep track of your baby's wet nappies as a sign of adequate hydration. A well-hydrated baby will typically have six or more wet nappies per day.

  5. Consult a healthcare provider: If you have concerns about your baby's hydration or feeding habits, don't hesitate to reach out to your us or a lactation consultant for guidance and support.


Giving water to babies under 6 months of age poses serious risks to their health and well-being. Breast milk or formula provides all the hydration and nutrients your baby needs during this critical stage of development. By following the alternative feeding recommendations that we discussed, you can ensure that your baby stays healthy, hydrated, and thriving. As always, prioritize your baby's safety and consult with us if you have any questions or concerns about your baby feeding practices.

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