system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:Why do people stutter?
gpt
There are four factors most likely to contribute to the development of stuttering: genetics (approximately 60% of those who stutter have a family member who does also); child development (children with other speech and language problems or developmental delays are more likely to stutter); neurophysiology (recent neurological research has shown that people who stutter process speech and language slightly differently than those who do not stutter); and family dynamics (high expectations and fast-paced lifestyles can contribute to stuttering).

Stuttering may occur when a combination of factors comes together and may have different causes in different people. It is probable that what causes stuttering differs from what makes it continue or get worse.