Peptides are typically shorter than proteins. While there is no strict cutoff, peptides often have fewer than 50 amino acids, whereas proteins can have hundreds or thousands of amino acids.

Peptides have diverse functions, including hormone regulation (e.g., insulin), cell signaling, immune system support, and serving as neurotransmitters.

Yes, peptides are used in medicine for various purposes. They can be used to mimic or block the actions of naturally occurring peptides or proteins in the body, which can help treat conditions like diabetes, cancer, and autoimmune disorders.

Yes, synthetic peptides are created in the laboratory. They can be designed for specific purposes, such as drug development or research.

Peptides can be safe when used as prescribed by a healthcare professional. However, improper use or self-administration can lead to side effects and health risks.

Yes, some skincare and anti-aging products contain peptides because they can help promote collagen production and improve skin texture.

Certain peptides, like growth hormone-releasing peptides (GHRPs) and selective androgen receptor modulators (SARMs), have been used by athletes and bodybuilders to enhance muscle growth and performance. However, their use is often controversial and may have legal and health implications.

Some peptides can be purchased OTC, especially in skincare products. However, many peptides used for medical or performance-enhancing purposes require a prescription.

The side effects of peptides can vary depending on the type and dosage. Common side effects may include pain or irritation at the injection site, hormonal changes, and, in some cases, more severe health complications if not used correctly.