Suzi Kwarciany Shaw
CNS, Certified Nutrition Specialist, 10 years bariatric advisor & specialist BE
Susan Maria Leach
Founder of Bariatric Eating
Author Before and After - Living & Eating Well After Weight Loss Surgery (HarperCollins Publishers)
Collagen protein and whey protein are often discussed in the same context since they are sold on the same store shelf or section on Amazon, both labeled as protein.
However, when it comes to collagen supplements and protein powder — they’re not the same. Which protein is right for you depends on your goal as the amino acids in collagen and whey protein serve completely different purposes in the body.
Whey protein is a complete dietary protein that is ideal for muscle building and weight loss. Collagen is not a complete dietary protein but is used for its potential for improving skin, bone, and joint health.
Whey is a dietary protein used to balance your blood sugar, fuel fat burning, prevent you from losing too much muscle while limiting calories and keep you feeling fuller for longer. Complete proteins contain all 9 essential amino acids that we need to get from our diet to fuel metabolic functions. Whey protein comes from milk. Your whey protein supplement should be 100% whey isolate and not have a long list of additives.
A whey protein supplement is essential to ensure you are getting enough protein to support your health. Especially when you are unable to consume enough protein through whole food because of a restricted diet, or have appetite suppression as occurs when taking GLP1 medications Ozempic, Semaglutide, Mounjaro or Tirzepatide.
Collagen protein does not replace whey protein. Most collagen is porcine, meaning it is derived from pigs – more specifically, it's gelatin made from boiling pig skin, joints and bones that is further broken down into peptides.
Collagen is missing essential amino acids that the body cannot make — specifically tryptophan and leucine but is higher in amino acids required by the body to properly build the collagen that provides strength and structure to our body.
It is important to know that there is little, if any, scientific evidence that collagen supplements are effective in improving skin, hair or overall health but it is very trendy right now with influencers touting its magic.
Those looking for a dietary protein supplement need Whey Protein as they want to fuel body function. Collagen Protein does not serve that purpose but may be a good addition to your day if you are looking for something that could possibly help reduce joint pain or improve the elasticity of your skin.
