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But “whey protein” is really a general term. There are three forms of whey protein: Whey Concentrate, Isolate, and Hydrolysate.
Whey concentrate is the least processed form and cheapest to manufacture. It will normally contain some fat and lactose. Whey concentrate can have anywhere from 34%-82% protein by weight, depending on the quality.
Whey isolate has been processed a bit more to remove the fat and lactose. Whey isolates are normally 90%+ protein by weight. Compared to whey concentrates, whey isolates are more expensive to manufacture and for consumers to purchase.
Whey hydrolysate is considered a “predigested” form of whey protein. By putting the whey through partial hydrolysis, solubility and digestibility are improved. The extra processing makes hydrolysate the most expensive form of protein.
As you can imagine, manufacturers are proud of their isolates and hydrolysates and promote them as superior, although there is not enough evidence out there to claim this definitively.
As previously stated, you can get a high-quality concentrate that is up to 82% protein by weight, but a lesser and cheaper concentrate could carry as low as 32%. What does this mean? For the lower whey protein concentrate, the remaining 68% is made up of something other than protein. What’s even more unnerving is that you will never know exactly what that 68% is consists of.
Compare this to a quality whey isolate, which contains 90%+ protein. Another benefit of using whey isolate is that with the removal of the extra fat and lactose, this means better digestibility.
So ultimately, a safe way to look at protein is that you get what you pay for.
How to use whey protein
Protein is extremely important in maintaining lean body mass during a time of calorie restrictive dieting, especially after bariatric surgery. Most bariatric programs recommend 60-80 grams of protein per day, and protein supplements can help you to meet your daily protein goal.
So how much protein should you be getting from supplements, and how much from whole food sources? This hasn’t been determined by research, but anecdotal evidence suggests getting at least 50% of your protein from whole food sources.
So, if you have a daily protein target of 80 grams, you need to get at least 40 grams from whole food sources and supplement your diet with a protein powder for the remaining 40 grams. The key word is supplement. Protein powder is NOT intended to be your entire source of dietary protein.
What is the best whey protein powder?
For athletes and bariatric patients alike, pure whey protein isolate is the best choice. It is absorbed quickly, and because all the lactose is removed through the process, it makes it easy on your stomach–especially if you are lactose intolerant.
A common practice amongst protein manufacturers is to use chemicals and other additives in their products. This may help with taste, cost, or both. So finding a product that is limited in potentially harmful additives can be difficult to come by.
Bari Life has developed a protein powder that is 100% pure Whey Protein. It is the ultimate protein supplement for bariatric patients for several reasons:
- BariLife’s Whey Protein is 100% whey protein isolate, not a “blend” of various forms of whey
- BariLife’s Whey Protein is derived from milk from cows that are free of recombinant bovine growth hormones (rBGH)
- BariLife’s Whey Protein is free of any harmful additives like MSG and food dyes
- BariLife’s Whey Protein is un-denatured and uses cross flow, ultra-cold microfiltration process, so all proteins remain intact
- 25-27 grams of protein
- 0 grams of carbohydrate
- 0 grams of fat
- o grams of sugar
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