PROTEIN
Whey vs Plant Protein
Amino acids, dietary fit and cost per 20 g protein.
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Whey Protein
In short
A dairy protein from the liquid part of milk left after cheesemaking. Sold as concentrate (some lactose and fat) or isolate (more filtered, higher protein percentage).
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At a glance
- Source
General reference - Milk (dairy)
- Amino acids
Published research - Complete protein; relatively high in leucine
- Dietary
General reference - Not vegan; isolate is lower in lactose
About whey protein
Whey is one of the most common protein powder bases. Isolate is filtered further than concentrate, so it’s usually higher in protein per gram and lower in lactose.
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Whey Protein products
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Other protein forms
Sources & references
- Jäger R, Kerksick CM, Campbell BI, et al. (2017). International Society of Sports Nutrition position stand: protein and exercise. Journal of the International Society of Sports Nutrition 14:20. pubmed.ncbi.nlm.nih.govPosition stand
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This page is educational and is not medical advice. Talk to a healthcare professional before starting a supplement, especially if you have a medical condition, take medications, or are pregnant or breastfeeding.