evidence: Anyone can become dehydrated if they don’t drink enough water. But infants and children are at a higher risk because they may be unable to communicate that they’re thirsty. This is especially important when they’re sick. So, make sure to monitor the amount of fluids your child takes in. Adults ages 65 and older are also at a higher risk. They don’t carry as much water in their bodies and they can’t tell as easily when they’re thirsty. If you’re a caregiver, especially for someone with memory problems, offer them drinks frequently. Even if they’re enduring an uncomfortable infection like a UTI (urinary tract infection), they still need to consume liquids. If you or your child has symptoms of severe dehydration, get medical care right away. Severe dehydration can lead to serious complications, including: