Does HGH Make You Taller?

HGH (human growth hormone) can make a child or teen taller only if their growth plates are still open and they have a specific medical reason for treatment, such as growth hormone deficiency. Even then, it is a prescription given by daily or weekly injections and managed by a pediatric endocrinologist. Once growth plates close after puberty, no growth hormone can add height.

Does HGH make you taller?

Growth hormone is made by the pituitary gland at the base of the brain. It tells the liver and the growth plates to make IGF-1, and together these hormones are the main drivers of bone lengthening in childhood. Your body's own growth hormone rises through childhood and peaks during adolescence.

So yes, growth hormone is essential for growing. But taking more of it only helps when there is a gap to fill, and only while bones can still lengthen. For a healthy teen whose body already makes enough, extra HGH is not a height shortcut.

Growth hormone therapy: who actually gets it

In the US, synthetic growth hormone is approved for a set list of childhood conditions, including:

• Growth hormone deficiency (the body makes too little)
• Turner syndrome and Prader-Willi syndrome
• Chronic kidney disease
• Being born small for gestational age without catching up
• Idiopathic short stature (ISS): very short height with no known cause

The bar for ISS is high. The FDA's criteria require height below about −2.25 standard deviations, roughly the shortest 1.2% of children, plus a growth rate unlikely to reach a normal adult height, after other causes have been ruled out. Healthy late bloomers and kids who are short because their parents are short are generally not candidates.

Before treatment, a pediatric endocrinologist reviews the growth pattern on a growth chart, checks bone age with a hand-and-wrist X-ray, and runs blood tests and sometimes growth hormone stimulation tests.

How much taller does HGH make you?

Results depend on the reason for treatment:

Responses vary a lot. Some children with ISS gain several inches; others gain almost nothing. Doctors usually judge after the first year whether treatment is working well enough to continue.

What treatment involves

• Injections for years. Growth hormone is usually given as a daily shot under the skin. A once-weekly version was approved by the FDA in 2021 for children with growth hormone deficiency.
• Regular checkups to measure growth, adjust the dose and watch for side effects.
• A stopping point. Treatment ends when growth slows to about 1 inch (2 to 2.5 cm) a year and bone age shows the plates are nearly closed.
• High cost. A US insurance-claims analysis found a median cost of $28,805 a year (2016 figures). For ISS, one estimate put the cost at about $52,634 per inch gained.

Side effects of growth hormone treatment

Doctors watch for these known risks during treatment:

• Increased pressure in the skull, which can cause headaches and vision changes
• Slipped capital femoral epiphysis, a hip growth plate problem that can cause a limp or hip or knee pain
• Worsening of scoliosis (a sideways curve of the spine)
• Swelling, joint and muscle pain, carpal tunnel symptoms, and higher blood sugar or diabetes risk

Cleveland Clinic also notes that researchers don't yet have enough information about long-term effects.

Can HGH make you taller after puberty?

No. Once growth plates fuse, usually in the mid to late teens, bones can no longer lengthen. Cleveland Clinic states plainly that HGH cannot make you taller after the growth plates have fused.

In fact, doctors stop growth hormone treatment before the plates close completely, because extra growth hormone without open plates can cause acromegaly-type changes. Excess growth hormone in adults causes acromegaly, a serious condition. If you're 18 or older and wondering what's left, read can you grow taller after 18 and how to tell if your growth plates are closed.

Bottom line: Growth hormone adds height only in children with open growth plates and a diagnosed reason for treatment. For everyone else, it brings risk without the height.

The risks of black-market HGH, peptides and "boosters"

Because HGH is linked with muscle and anti-aging claims, it's sold illegally online. Here's what to know:

• It's illegal outside a doctor's care. Under federal law, distributing HGH, or possessing it to distribute, for any use other than an approved medical one is a felony punishable by up to five years in prison, according to the DEA. Illegal HGH comes from internet pharmacies, clinics that prescribe without a real exam, smuggling and counterfeits.
• You don't know what you're injecting. Black-market HGH can be counterfeit, there's no way to check what's really in the vial or how much, and shared needles carry a risk of serious infections.
• "Peptides" aren't a safe workaround. Compounds sold to raise growth hormone, such as ibutamoren (MK-677), ipamorelin and GHRP-6, are not FDA-approved drugs. The FDA lists them among substances that may pose significant safety risks, citing a possible heart failure signal with ibutamoren and serious adverse events reported after ipamorelin use.
• Pills, sprays and "releasers" don't deliver. The FTC has said it has seen no reliable evidence that over-the-counter HGH products work like prescription growth hormone.

None of these can add height after growth plates close, and in a growing teen, messing with hormones risks more than it could ever gain.

What actually helps if you're still growing

If your growth plates are open, the proven basics are sleep (8 to 10 hours for teens), enough calories and protein, regular activity and treating any health problems that slow growth. Our guide on how to grow taller explains each one, and our testosterone guide covers the other hormone people ask about.

When to see a doctor

Talk to your pediatrician, who can refer you to a pediatric endocrinologist, if:

• You're much shorter than most kids your age, or you seem to have stopped growing
• You haven't grown in a year, or you're dropping across percentile lines on the growth chart
• Your height is far below what your parents' heights suggest
• You show no signs of puberty by about 14 (boys) or 13 (girls)

If you are on growth hormone treatment, report headaches, vision changes, a limp or hip or knee pain to your care team right away.

The takeaway

HGH is a real medical treatment, not a height hack. It helps children with specific conditions grow while their growth plates are open, at a high cost and with real side effects. If you're worried about your height, a growth evaluation is the safe first step.