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Hormones, explained simply.
Hormone describes a job: carrying a chemical message that changes what another part of the body does.
Hormones help different tissues and organs coordinate their work. A hormone can influence appetite, blood sugar, growth, reproduction, sleep, stress responses, and many other processes.
Hormones are not all made from the same material. Some are peptides or proteins, some are made from cholesterol, and others come from individual amino acids. That means one substance can correctly belong to both the Hormones category and another scientific category.
Categories can overlap. Each individual entry explains what the subject is, what evidence applies, and what remains uncertain.
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Understand the category, then evaluate the individual subject.
Being a peptide, hormone, vitamin, or protein does not prove that something is effective, safe, approved, or suitable for a person.
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