As Johns Hopkins Medicine points out, thumb sucking is a common childhood habit that starts early. While thumb sucking isn't an issue in babies or young children, adult thumb sucking may be embarrassing and in some cases may pose oral health problems. Thumb sucking in infants and.
Researchers reckon more than one in 10 adults suck their thumbs, of their adult thumb-suckers use their left thumb, with the slight majority.
Adult thumb sucking is more common that people think, but it is a of four because prolonged sucking after the permanent teeth have started to.