This is a key point to remember. Despite all the marketing hype, there are (unsurprisingly) major downsides to these protein powders. To start with, they are anything but real food. Nowhere is there a âwhey protein isolateâ tree. There are not chickens laying âprotein powderâ eggs. This immediately places them as a sub-par choice in a good, real food based diet. Lets get into a little biochemistry to fully understand why.
Whatâs The Source?
With most âPaleoâ protein powders consisting mainly of whey protein, I will start with the obvious fact that whey is derived from dairy. Dairy, while sometimes being consumed on a Paleo diet, is mostly left out.
Why whey protein is recommended so widely in the Paleo community, despite this glaring discrepancy, Iâve never understood. But what exactly is whey? It is one of the components of dairy, specifically the leftover portion after milk has been curdled. Whey proteins usually consist of Î±-lactalbumin, Î²-lactoglobulin and sometimes glycomacropeptides (GMP).
The main concern with the biochemistry of dairy, in this case whey, is that it is hyper-insulinogenic. This means your body secretes a very large amount of insulin in response to you consuming it. This is paradoxical, since it has a low glycemic load. As seen in this study whey has a substantial effect on blood glucose levels.
Insulin-like growth factor 1 (IGF-1) is also increased substantially when dairy is consumed. Since dairy has been recognized in scientific literature as ânot just food but most likely a genetic transfection system activating mTORC1 signaling for postnatal growth,â its consumption should not be taken lightly.
Besides the insulin response, the bioactive hormonal growth response, and the mTORC1 signaling pathway response (which, by the way, promotes diseases of civilization), dairy also has the problem of lactose. Since not all humans can easily process dairy (lacking the lactase enzyme required to do so) the lactose in milk can cause significant problems for many people. These problems are: bloating, gastrointestinal discomfort, an imbalance of gut bacteria (which promotes dysbiosis of the gut) and other issues. These other issues can show up as:
The effects of whey protein supplementation on muscle growth in response to exercise are also debatable, at best. This fairly conclusive study states that: âResistance training in middle-aged and older men significantly increased muscular strength and added muscle mass with no additional benefits from creatine and/or protein supplementation.â Hard to argue with that. Another example of problems with protein powders, is the overconsumption of BCAAs (branched chain amino acids).
Protein Powdersâ Hidden Problems
A very overlooked problem with protein powders is too much of the essential amino acids: valine, leucine, and isoleucine. These BCAAs are great when provided in real food, and in the right amounts. In excess, however, they are used for energy utilization.
This means they stimulate de novo lipogenesis (ânew fat creationâ) via the SREBP-1c pathway in the liver. If that isnât enough, valine and leucine/isoleucine levels are 20% and 14% higher in obese compared to lean subjects. All that being said, letâs start reviewing what products are out there for purchase, and what may or may not be good about them.
Now lets get into the nitty gritty. Where are these sources of protein coming from, and HOW are they processed? Neely Quinn from Paleo Plan has covered this excellently, and she says the following:
âI called 3 distributors of egg white protein powders, only one of whom could even vaguely describe how the protein powder was made. What I gathered is that itâs basically separated from the yolk, pasteurized for a few minutes in 134 degree heat and then spray dried, which means itâs dried with more heat to make a powder. Iâm not saying that cooking eggs isnât a good idea, but who knows how high the heat is, for how long they heat it, and where the eggs come from in the first place. One of the 2 big egg white protein powder manufacturers is in China, although I had to find that out for myself since the guy at Jay Robbâs refused to give me their manufacturerâs name.â
Does something like that sound like a good idea to be putting into your mouth and body, especially on a daily basis?
Paleo Protein Products
Paleo ProteinÂ®: The new kid on the block is actually mainly sourced from egg protein, not dairy. While in theory this sounds better, you have to begin to think about where those eggs are coming from and how they are processed. Are they pasture raised? Not likely.
Are they processed through damaging high heat methods? Likely. As you will come to see in almost all protein powders, an artificial sweetener, like Stevia, is present.
Stevia is has been scientifically proven to augment insulin release from islets incubated in the presence of 7.0 mM D-glucose. So despite the fact that you arenât consuming sugar, your body still somewhat reacts like you are. Not a good thing. Overall though, if you have to select a protein powder, this is a solid choice.
Now was this beef grass fed? Where did it come from? How was it processed?
The answers to these questions are not likely going to be favorable. We are also getting maltodextrin (processed corn starch), emulsifiers (a small truckload) and an artificial sweetener (Stevia). Whole9 has an excellent write up on why these ingredients are bogus. Thumbs down on this one.
Reserve AgeÂ® Organic Grass Fed Whey: This is the next one our list and if youâre looking for a whey protein powder, this is actually an excellent source. Real food is still better, but their protein is minimally processed, undenatured, and grass fed. There also almost no other ingredients. Donât forget the problems with dairy, but choose this if you want the effects (and detriments) of whey.
Mark Sissonâs Primal FuelÂ®: This is another interesting product. Going with coconut milk as an interesting addition to the typical protein powder formula, the rest of the mix is less favorable, loaded with sugar, maltodextrin and guar gum. Original formula, if not entirely ideal. There are worse choices for sure, but why not just have a can of coconut milk and a piece of chicken?
ProgenexÂ®: This is a very popular ârecoveryâ powder. Despite itâs widespread popularity in the CrossFitÂ® community, Progenex is probably the worst formula available since it contains fructose, sucrose and soy. The epitome of why eating some chicken and a sweet potato are preferable, post-WOD.
What are your thoughts on âPaleoâ protein powders? Do you have a favorite? Do you have comments, ideas? Leave them in the comments!