Q Why do kids suck thumb? Does it mean that they are hungry?
Babies suck thumb because thumb sucking has a soothing and calming effect on them. No, it does not always suggest that the kid is hungry. Thumb sucking around the feeding time could indicate that the kid is hungry, but not otherwise.n Babies may suck thumb when they are lonely, bored, or sleepy too! This habit usually stops by the age of 3 to 6 years.n Some babies develop habit of thumb sucking right in the womb!