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What you need you know about peptides
What are Peptides?
At their core, peptides are short chains of amino acids linked by peptide bonds, typically 2–50 units long.
The key distinction isn’t just size—it’s function.
- Amino acids → individual building blocks
- Peptides → short, functional signalling units
- Proteins → larger, folded structures with complex roles
The most important point:
Peptides are often biologically active signals, not just structural components.
Many naturally occur in the body as:
- Hormones (e.g. insulin)
- Neurotransmitter modulators
- Growth factors
- Immune signalling molecules
Understanding Peptides
A Science-Led Overview
Peptides have become an area of growing interest across scientific research due to their ability to interact with specific biological pathways. In this guide, we break down what peptides are, how they function within the body, and the key differences between them. From tissue repair and metabolic regulation to hormonal and neurological signalling, this overview is designed to provide a clear, research-focused understanding of one of the most versatile categories in modern biological science.
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