evidence: Fact check: Giving water to babies is unsafe before 6 months, can lead to brain damage, death [...] "BABIES CANT HAVE WATER BEFORE 6 MONTHS," reads the post. "Please educate yourself before you harm your baby. Water dilutes the sodium levels in babies and can cause seizures, coma, brain damage or death." [...] Pediatricians told USA TODAY giving water to babies under 6 months old can be hazardous to their health because their kidneys can't process much water. They recommended the exclusive use of breast milk or formula for the first six months.