ANSWERS: 1
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Some hormones are steroids, but human growth hormone (hGH) isn't one of them. This naturally occurring substance regulates height and body growth, but apparently has no affect on athletic performance. On the plus side, it doesn't have the negative side effects of anabolic steroids, either.
Source:
The Hormone Foundation: The Endocrine System: Diseases, Types of Hormones & More
The Medical Biochemistry Page: Steroid Hormones
Annals of Internal Medicine: The Effects of Growth Hormone on Athletic Performance
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