Yes. Boys are roughly twice as likely as girls to wet the bed at any given age during childhood, and the pattern is consistent across every large-scale study I have read in three decades of practice. The reasons are partly biological, partly developmental, and worth understanding.
The numbers
At age five, roughly 15 to 20 percent of children still wet the bed. By age seven the figure drops to about 10 percent, and by age ten it falls to around 5 percent. Throughout this whole range, boys make up the majority of cases, by a margin of roughly two to one. The gap narrows during adolescence and reverses in adulthood, but during the years parents care about most, bedwetting is more of a boys' problem.
Why the difference
Several factors contribute. First, boys tend to lag girls in functional bladder capacity at every age through about ten. Second, boys often have a delayed development of the overnight release of vasopressin, the hormone that signals the kidneys to reduce urine production during sleep. Third, boys are more likely to be deep sleepers in the relevant age range, which means they are less likely to surface when the bladder signals it is full.
There is also a coordination factor. Boys rely on two sphincter muscles rather than one, and the coordination of both during sleep takes a little longer to mature. None of these factors are pathological. They are normal developmental variations that happen to push the statistics in one direction.
It is not behavioural
This part matters. Bedwetting in a school-age boy is not a sign of laziness, defiance, attention-seeking, or emotional immaturity. It is a developmental difference in the neurological control of the bladder during sleep. The child is asleep. He is not making a choice. Punishing or shaming a bedwetting child makes the emotional cost worse without changing the underlying biology.
What treatment looks like
The good news is that the gender difference disappears in the treatment room. Boys respond to bedwetting alarm conditioning just as well as girls. The same protocol, the same timeline, the same outcomes. Three to four months of consistent work, and most boys finish dry.
If your son is over the age of six and still wetting, you do not need to wait another year on the chance that he will grow out of it. Boys do grow out of it eventually, but the emotional cost of waiting can be significant, and treatment now usually produces a better result than another year of pull-ups and hidden shame. Explore our treatment plans.