Parents often search catch up growth first year treatment because they want to know what happens after a child begins growth support. The first year of therapy is often when the most noticeable acceleration in growth occurs — especially for children who were previously growing slowly.
At HGH for Children, the first year is carefully monitored to evaluate how strongly a child responds and how much growth potential remains.
What Is Catch-Up Growth?
Catch-up growth refers to a period when a child grows faster than their previous rate in order to move closer to their expected growth curve.
Before treatment, some children may:
-
Grow below age expectations
-
Gain only 1–2 inches per year
-
Fall behind peers on the growth chart
After appropriate therapy begins, growth velocity often increases.
What Happens During the First Year?
The first year is commonly the strongest response period.
Many children experience:
-
Significant increase in yearly growth rate
-
Several measurable inches gained
-
Stabilization or improvement in percentile
-
Narrowing of the gap with peers
This early acceleration is often most noticeable in children with confirmed growth hormone deficiency.
Why the First Year Is So Important
When growth signaling improves, the body may respond quickly — especially if:
-
Growth plates are widely open
-
Bone age is delayed
-
Therapy begins before puberty advances
The first 12 months provide valuable insight into long-term potential.
Does Catch-Up Continue Every Year?
Not necessarily. After the first year:
-
Growth usually continues steadily
-
The rate may normalize
-
Gains become more gradual
The early acceleration often levels into a consistent pattern over time.
What Influences First-Year Catch-Up?
Results vary based on:
-
Age at start
-
Remaining growth potential
-
Underlying diagnosis
-
Baseline growth rate
-
Consistency of therapy
Starting earlier generally allows more total growth benefit.
How Progress Is Measured
Catch-up growth is tracked by:
-
Height velocity (yearly growth rate)
-
Percentile changes
-
Bone maturity over time
Growth is evaluated over months and years, not weeks.
The Takeaway
Catch-up growth in the first year of treatment is often the most noticeable phase of improvement. Many children show a significant increase in growth rate during this period, especially when therapy begins before puberty and while growth plates remain open. Steady monitoring ensures progress continues appropriately over time.
Learn more about pediatric growth care at www.hghforchildren.com.
