No one stutters BECAUSE of anxiety but fear of stuttering and anxiety around it makes it much worse. There are neurological reasons for stuttering: Being able to coordinate the lips, tongue, lungs, and vocal cords while thinking of what you want to say is very complex. Kids usually start to stutter around age 3-5. When kids are 2 years old they only have to put 2 words together. When they have to use full sentences managing longer sequences of sounds and more complex sentences can result in stuttering. Then for the first time children worry and hesitate to speak when they become aware of stuttering. That is turn makes it worse. Regarding your stutter: Do you stutter if you talk to a pet, or by yourself? Do you stutter if you sing? If you read aloud? If you say something you’ve memorized?