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Start with the basics

The Molecule Library

You do not need a biology degree to understand what people mean when they talk about peptides, proteins, hormones, vitamins, and other substances involved in the body.

The Molecule Library is a plain-language starting point for substances that appear in wellness, medical, and peptide-research conversations.

A molecule is a group of atoms held together as one unit. That definition is scientifically useful, but it does not tell a normal reader why water, vitamin B12, a peptide, and a protein belong in very different conversations.

We organize this library by the category that is most useful when someone is trying to understand a subject. Choose a starting point below, then follow the individual entries and research questions that matter to you.

Explore by category

Where would you like to begin?

If you already know the name of a peptide or vitamin, choose its category. If the vocabulary itself is the problem, begin with the glossary.

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The library explains research and terminology. It does not diagnose conditions, recommend treatment, or make every substance in a category equivalent.

Other ways to explore

Start with the category. Then understand the individual subject.

The name of a category cannot tell you whether a particular substance is useful, proven, risky, regulated, or appropriate for a person. Those answers belong on the individual entries inside the Molecule Library.

Open the plain-language glossary →