Peptides
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Peptides are strings of molecules called amino acids, which are the “building blocks” of proteins. Peptides are basically short proteins that are about 2–100 amino acids long.
Researchers have been working to develop peptides as treatments for some medical conditions since 1921. In fact, insulin was the first peptide ever made in a lab by scientists (called a synthetic peptide), and it's been used to treat people with type 1 diabetes since 1923.
Peptide drugs may have some advantages over other drugs because they may:
Studies show that some peptides may also have benefits for your skin, muscles, and maybe your weight. So, for decades, companies have been putting them into skin care products and dietary supplements you can buy over the counter.
Peptide therapy is the use of peptides to change or improve how certain parts of your body work. For instance, some athletes use growth hormone-releasing peptides to help their body produce more growth hormone. This can help their bones and muscles recover after hard training and competition.
No. Peptides and steroids are different molecules. Peptides are chains of amino acids, while steroids are ring-shaped fatty molecules. Both can help you build muscle and burn body fat, but they do it through different processes. And while peptides don’t seem to have many side effects, steroids can have serious side effects and are often illegal to use without a prescription.