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    Ingredient guide · Ingredient reference

    What hormones are made of: three chemical families

    Some hormones are amino-acid derivatives, others are peptides or proteins, and steroid hormones are derived from cholesterol. Hormone is a signaling role, not one shared chemical recipe.

    Read the evidence ↓

    Supplement Science Insights Editorial Team

    Published September 23, 2026

    The categories describe different structures

    Amine hormones are derived from individual amino acids; examples include tyrosine-derived catecholamines and thyroid hormones. Peptide and protein hormones instead contain chains of amino-acid residues. [1]

    Steroid hormones have a different starting framework: cholesterol. Examples include cortisol, aldosterone, estrogen and testosterone. It would therefore be incorrect to say that every hormone is a protein or that every hormone is made from cholesterol. [1]

    Chemical origin is not a dietary instruction

    A precursor relationship does not establish that eating more of that precursor raises a hormone to a desirable level. A nutrient source, a biosynthetic pathway and a hormone treatment are separate questions. [1]

    Likewise, grouping hormones by composition does not make the members of a group interchangeable. Their receptors, tissues and physiological effects matter when interpreting a claim about hormonal activity. [1]

    Sort the molecule before generalizing

    Imagine comparing insulin and cortisol. Insulin belongs to the peptide/protein group, while cortisol is a steroid. A statement about the chemical construction of one cannot automatically describe the other.

    Key distinctions — What hormones are made of
    DetailInterpretation
    AmineIndividual amino-acid derivative
    Peptide/proteinAmino-acid chain
    SteroidCholesterol-derived framework
    What hormones are made of: three chemical families — original article outline diagram
    Original editorial diagram of this article’s sections; no product photograph or clinical finding is depicted.

    Sources for this article

    1. 17.2 Hormones - Anatomy and Physiology 2e | OpenStax
      Source consulted: 2026-09-17. This is a reference resource, not a claim that we conducted the studies or tested a product.