Though there's a published estimate of 10% this is most probably false. It's probably closer to 1 to 2 percent.
With the advent of the Internet the subject of adult thumb sucking has left the shadows and, as a result, it is now well known that adults do, indeed, suck their thumb. The best estimate, so far, is that affects about 2% of the adult population in the United States.
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.
Up to 80% of children under age 2 suck their thumb with the percentage decreasing with age. It is estimated that up to 2% of adults continue the habit, with the highest (unrealistic) estimate at 12%. The largest fall off occurs between the ages of 4-6, with the next fall off occurring at 8-12, slowly diminishing thereafter.
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..... ; )
no one knows that
yes
because adults suck