Thumb sucking is a natural reflex seen in many infants and toddlers. It often starts in the womb and can serve as a comfort and self-soothing mechanism for babies. Parents may notice their infants sucking their thumbs or fingers as early as a few months old. While thumb sucking is typical for babies, most will outgrow the habit by the time they reach school age. However, prolonged thumb sucking can affect dental alignment and oral health, so it’s essential for parents to monitor this behavior. If you notice your baby has developed a consistent thumb-sucking habit, consider providing alternative comfort options, like soft toys or pacifiers, which can help reduce reliance on thumb sucking. Engaging children in activities that keep their hands busy can also be effective. If thumb sucking persists beyond the toddler years, consulting a pediatrician or dentist can provide additional strategies to help your child transition away from this habit.