Considering that thumb sucking is free, legal, convenient, effective at producing calm and sleep under a variety of conditions, is nonintrusive (like smoking for instance), quiet, without drugs, alcohol, or calories...why not. It's the best, easy habit around. It's only problem is that it's not socially acceptable but if enough people do it publicly, that too can be overcome.
The downside is that it can cause extensive dental damage. The roof of them mouth can be reshaped from the sucking pressure around the thumb, which can cause swallowing difficulties. The movement of the teeth can be so severe that is causes speech issues. There is also just the cosmetic factor of the overbite and tooth gapping that comes with it. It is something that you may want to speak to your dentist about. If you are stressed and need a coping mechanism, there are healthier outlets.
No. But don't suck on your thumb, it's weird.
They CAN suck their thumb, however by that age, they should have grown out of it.
No.
Babies mostly do
Sucking of the thumb is a bad habit that cant be stopped easily. Wrap paper tape on your thumb if it there you wontwon't want to suck it. Do this for some months. The habit should stop.
you suck your thumb
Suck it..... ; )
yes
no one knows that
Yes and, in fact, there are a plethora of adult thumb suckers who currently exist.
Get him to suck something else...
you will get an over bite KOrenblatt