Thumb sucking is a common habit among toddlers who start sucking their fingers due to soothing effects of it. Most of the kids start it as a reflex action and leave this habit after their early years, but some of them continue practicing thumb sucking for a longer time period. It can have harmful effects if kids are not stopped from putting their thumbs into mouths. However, you may need to know the reasons for thumb sucking in case you have to stop your kids’ habit.
