 [ Symptoms ] my son is 7 years old and weighs 90 pounds and urinates a lot what does this mean [ Disease ] 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