SYDNEY: An Australian study has reinforced concerns about the impact of bottle-feeding babies to sleep beyond 12 months, linking the habit to increased risks of dental cavities and childhood obesity. Researchers warn that prolonged exposure to milk or formula sugars can contribute to tooth decay, while the extra calorie intake may lead to early weight gain.
The study, published in the Australian and New Zealand Journal of Public Health, followed over 700 children in Sydney from birth to four years, examining their feeding routines, weight trends, and dental health. Lead author Heilok Cheng emphasized the significance of this research, particularly for Australia, where nearly 89% of the population has access to fluoridated water—a key factor in dental protection.
"While similar studies have been conducted internationally, our findings highlight the unique conditions in Australia. Even with fluoridated water, bottle-feeding to sleep remains a risk factor for cavities and unhealthy weight gain," Cheng told the Australian Broadcasting Corporation (ABC).
Why Bottle-Feeding to Sleep Poses Risks?
- Tooth Decay: Milk or formula left on teeth overnight fuels bacteria growth, leading to cavities.
- Weight Gain: Babies consuming extra calories while sleeping may develop unhealthy eating patterns.
- Sleep Dependency: Using a bottle as a sleep aid can create long-term sleep association difficulties.
The Australian national dietary guidelines recommend introducing a cup at six months and completely stopping bottle use by 12 months. Cheng urged more parental support and awareness to transition babies away from bottle-feeding to sleep.
"Helping families adopt healthier bedtime routines is crucial," Cheng added. "Providing parents with the right information and support can make a difference in reducing these risks."
Takeaway for Parents:
✅ Introduce a cup by six months and phase out the bottle by 12 months.
✅ Offer water instead of milk or formula if a child needs a drink before bed.
✅ Establish soothing bedtime routines without relying on a bottle.
With childhood obesity and dental health issues on the rise, this study serves as a wake-up call for parents and caregivers to adopt healthier sleep and feeding habits for infants.