it may not mean anything or it could be an important symptom. since i do not know anything about his medical history or have any way of examining him taking a family history and ordering a blood and urine test it would be wise to discuss this with his medical provider. one possibility could be juvenile-onset diabetes (type 1). and i know you have been thinking about this. but there can be many other reasons why a child would be urinating more than normal. get him checked out.
my son is 7 years old and weighs 90 pounds and urinates a lot what does this mean?