Genuine question here. My DS is 14 wks old and has sucked his fingers from a v early age and has recently started sucking his thumb. He is a very settled baby and I think this is partly because he can soothe himself by sucking, and having had a DD who really wasn't I am grateful.
I am happy to let him suck his thumb/fingers (I did and remember how comforting I found it), however, many many times people have said to me 'you want to stop that' or 'pop a dummy in, don't let him suck his thumb - you can take a dummy away'.
But why? Really interested to know. Is there a problem with speech development? I can see that there could be a problem with teeth (although I didn't have one) but what else? I want to do the best for my baby and would like to understand both sides of the argument/science (?) to help make a decision.