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Protein or peptide

A powder, usually flavored, that is consumed for the purpose of adding dietary protein to the diet when food is not consumed. Typically seen as a food product or a meal replacement, protein powders come from a variety of sources such as milk, beef, rice, pea, or hemp.

Our evidence-based analysis on protein or peptide features 184 unique references to scientific papers.

Kamal Patel
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Summary of Protein or peptide

Protein supplements are typically used in conjunction with a proper diet (or as a band-aid to a subpar diet) to increase dietary protein intake.

Some specific types of protein are made for certain scenarios, such as casein protein for a slow-release protein and whey protein for a faster release.

They differ from Amino Acid Supplement as protein supplements will be a non-specific assortment of amino acids in large amounts, whereas Amino Acid supplementation is in lower doses, in isolation, and for specific purposes.

Protein powders can be from either animal sources or plant sources, it is generally advised for vegans and vegetarians to consider protein supplementation due to the chance that their diet may be subpar.

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List of Protein or peptide Supplements

Frequently Asked Questions and Articles on Protein or peptide

How can you assess protein quality?
Several scales have been developed to rate proteins according to their respective bioavailabilities and, more recently, amino acid profiles. Those scales can help guide your choice of protein, as long as you understand their premises and limitations.
Read full answer to "How can you assess protein quality?"
Protein Intake Guide
Your optimal daily protein intake depends on your weight, goal, and level of physical activity: from 1.2–1.8 g/kg if you’re sedentary all the way up to 3.3 g/kg if you’re trying to minimize fat gain during a bulk.
Read full answer to "Protein Intake Guide"
5 little-known facts about protein
Can you survive if you eat only protein? Can you survive without eating protein? How does your body keep functioning when you fast? Do high-protein diets actually promote weight loss, or do they only help you retain muscle when you eat below maintenance? Find the answers to those questions, and more, in the article below.
Read full answer to "5 little-known facts about protein"

Things to Note

Also Known As

Protein powder, dehydrated protein, protein, Protein supplements, protein supplement

Do Not Confuse With

Amino acid supplements

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Research Breakdown on Protein or peptide

Click here to see all 184 references.

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Each member of our research team is required to have no conflicts of interest, including with supplement manufacturers, food companies, and industry funders. The team includes nutrition researchers, registered dietitians, physicians, and pharmacists. We have a strict editorial process.

This page features 184 references. All factual claims are followed by specifically-applicable references. Click here to see the full set of research information and references for Protein or peptide.

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