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Should my infant drink water in hot weather?
Q: Now that summer is here, should I give my 2-month-old baby water bottles when it's hot?
A: Breast milk and formula are mostly water, so additional water bottles are not necessary for a young infant, nor are they recommended. Babies fall asleep when their tummies are full, regardless of what is in there. If your baby misses a feeding because he is full of water, he won't be getting the nutrition he needs.

If you are concerned your baby might dehydrate in hot weather, look for these signs:

  • Lack of energy
  • Dark yellow urine in the diapers
  • Skin that is not plump
  • If you notice any of these symptoms, call your pediatrician immediately and try to breastfeed or give a bottle of formula.

Susan M. Leisner RD, IBCLC, RLC Nutritionist & Lactation Consultant