HGH Pros and Cons: What Human Growth Hormone Really Does (Benefits, Risks, Legal Status)

What are the HGH pros and cons, and is it worth it?

HGH has real benefits for people who are truly deficient.

But in healthy adults, studies show small body changes and frequent side effects.

I get this question a lot, mostly from men who want more muscle, less fat and more energy.

I’ve focused on hormones for more than 20 years.

So today I’m going to walk you through what human growth hormone does, what the trials found, the side effects and the legal status.

What Is HGH?

HGH stands for human growth hormone. Your pituitary gland makes it, at the base of your brain.

In children, it drives growth. In adults, it helps manage muscle, body fat, bone and how you use sugar and fat for fuel.

Your levels fall with age. In fact, after about age 30, growth hormone release drops by roughly 15% per decade.

So the idea sounds logical: replace the hormone and turn back the clock. However, the research tells a more mixed story.

HGH Pros: Where It Clearly Helps

Prescription HGH is a real medicine with real, approved uses. For example:

• Children with growth hormone deficiency and certain other growth conditions
• Adults with a confirmed growth hormone deficiency, often from a pituitary tumor or its treatment
• Muscle wasting linked to HIV/AIDS

In adults with a true deficiency, the Endocrine Society says treatment can improve body composition, exercise capacity, bone health and quality of life.

But notice the key words: true deficiency. Doctors confirm it with special stimulation tests, not with a guess based on age or symptoms.

Normal aging is not the same thing as a deficiency. And that’s where the debate begins.

HGH Pros and Cons: What Trials in Healthy Older Adults Showed

The anti-aging excitement started with one small study in 1990.

Researchers gave growth hormone to 12 men over 60 for six months. Nine other men got no treatment. Lean body mass rose by 8.8% in the treated men, and body fat fell by 14.4%.

Those numbers made headlines. But it was only 21 men, and for only six months.

Later, researchers pooled the trials done in healthy older adults. The average treatment time was 27 weeks. Here’s what they found:

• Fat mass went down by about 2.1 kg
• Lean body mass went up by about 2.1 kg
• Body weight did not change overall

So the body composition change is real, but modest. Also, “lean mass” includes water, not just muscle. And HGH is known to cause fluid retention.

Another trial tested HGH for 26 weeks in healthy older men and women. In men, lean mass rose by about 3.1 kg on HGH alone.

However, strength barely moved. Only men taking HGH plus testosterone showed a small, borderline gain. And women showed no significant strength gains at all.

If you’re weighing hormones in general, you may also want to read about testosterone replacement therapy pros and cons.

Does HGH Help With Muscle and Performance?

For bodybuilders and athletes, this is where the HGH pros and cons matter most. So what does the research say?

A review pooled 27 controlled trials with 440 healthy participants. Lean body mass rose by about 2.1 kg more with growth hormone than without it.

But strength did not improve. Exercise capacity didn’t either.

In fact, the growth hormone groups reported more fatigue and more swelling. That’s not what most people expect.

To be fair, these trials were short, and they used medical doses. So they don’t tell us what happens with the larger amounts some people use on their own. However, they also give us no good reason to assume it’s safe or effective.

HGH Cons: Side Effects and Risks

This is where the HGH pros and cons really tip, at least for healthy adults.

In the pooled trials of healthy older adults, side effects were much more common with growth hormone than without it:

• Swelling (fluid retention): 50% vs. 8%
• Joint pain: 21% vs. 5%
• Carpal tunnel syndrome: 19% vs. 1%
• Breast tissue growth in men: 6% vs. 0%
• New diabetes: 5% vs. 1%

Also, the 26-week trial found something similar. More of the men taking growth hormone developed diabetes or glucose intolerance: 18 men versus 7 in the comparison groups.

That matters, because growth hormone works against insulin. So if blood sugar is already a concern for you, read how high blood sugar affects your testosterone too.

There are other downsides as well:

• Unknown long-term safety. The trials were small and short. So we don’t have good data on cancer, heart disease or lifespan in healthy users.
• Not for people with active cancer. Guidelines list it as a reason not to use growth hormone.
• Cost. Prescription HGH is expensive, and it requires regular injections.
• Fake or contaminated products. HGH bought outside a pharmacy may not be what the label says.

HGH Pros and Cons at a Glance

Pros	Cons
Proven benefit in true growth hormone deficiency	No proven anti-aging benefit in healthy adults
About 2 kg less fat in trials of healthy older adults	Swelling in about half of users in those trials
About 2 kg more lean mass	Little or no gain in strength or fitness
Prescribed and monitored by a doctor when approved	Joint pain, carpal tunnel, higher blood sugar
	Unknown long-term safety; expensive; injections
	Illegal to distribute for anti-aging or bodybuilding in the U.S.

Is HGH Legal?

Yes, with a valid prescription for an approved medical use.

However, HGH is treated differently than most drugs. With most medicines, doctors can prescribe “off-label”. But with growth hormone in the U.S., federal law limits distribution to approved uses.

A legal review in JAMA made this clear. It concluded that providing growth hormone for anti-aging or athletic enhancement is illegal.

Laws differ in other countries. Also, sports bodies ban it for athletes.

What about HGH pills, sprays and “releasers”? Real HGH only works by injection. So products sold as oral HGH are not the same thing, and the evidence behind them is weak.

So don’t fall for the marketing.

Supporting Your Own Hormones Naturally

You can’t out-supplement aging. But your daily habits do affect your hormones.

Your body releases much of its growth hormone during deep sleep. So good sleep matters. If that’s a struggle, see my comparison of magnesium versus melatonin for sleep.

Hard exercise and a healthy body fat level also support normal hormone balance. And keeping stress and cortisol in check helps too. Here’s how to lower cortisol naturally.

These steps are not dramatic. But they’re safe, and they improve your health in many other ways.

The Bottom Line

So, what’s the verdict on the HGH pros and cons? For people with a true deficiency, growth hormone is a valuable, approved therapy.

But for healthy adults chasing anti-aging or muscle, the picture is different. The gains are modest. The side effects are common. And the long-term risks are unknown.

So if you think your levels are truly low, talk with your doctor and get properly tested first.

For extra support, I formulated AlphaViril™ back in 1998. It is designed to support healthy testosterone levels within a normal range, used alongside good sleep, exercise and stress control.

Frequently Asked Questions About HGH

Does HGH slow or reverse aging?

There’s no good evidence that it does. In healthy older adults, HGH modestly lowered fat and raised lean mass, but it didn’t reliably improve strength or function. Side effects were also common.

What are the most common HGH side effects?

In trials, the most common were swelling from fluid retention, joint pain and carpal tunnel symptoms. Higher blood sugar and new diabetes also showed up more often. Also, men sometimes developed breast tissue growth.

Does HGH build muscle?

HGH raises lean body mass by about 2 kg in studies, but part of that may be water. However, strength and exercise capacity did not improve in pooled trials of healthy adults.

Is HGH legal for bodybuilding or anti-aging?

In the U.S., no. Federal law limits growth hormone distribution to approved medical uses, such as a confirmed deficiency. Rules differ in other countries.

Who should take HGH?

People with a diagnosed medical need, such as a confirmed growth hormone deficiency. Doctors confirm that with specific testing. This is a decision to make with an endocrinologist.