A Message from UNJURY

This is a message about vendor postings and scientific support. Some vendors participate in the Q&As using their personal name without clearly stating in the posting that they are vendors. While some of you are aware of the affiliation, others are not. We believe vendors should clearly identify themselves in each posting -- so everyone knows. Recently a vendor made statements about protein supplements which are untrue, and which have no scientific support. Specifically, the posting discussed whey protein ISOLATE vs "blends" -- blends presumably containing both whey protein CONCENTRATE and whey protein ISOLATE. Readers interested in the Food & Drug Administration definitions of each can find them at this FDA link http://www.cfsan.fda.gov/%7Erdb/opa-g037.html . It was stated that "blends" are better than isolate-only products. This is not true, and has no scientific or clinical support. In fact, the opposite is true. All whey ISOLATE, without any whey concentrate, is better. The issue is LACTOSE--milk sugar. Some whey protein concentrate is composed of 25% protein and as much as 50% lactose. While some concentrate has better proportions of protein and lactose, generally you cannot tell from the label. And concentrate always has less protein, and more lactose, than isolate. In contrast, whey isolate must be at least 90% protein, and has negligible lactose. We know of no medical or clinical reason to ever want to replace any amount of protein with lactose. Thus, all-isolate products are better. You should also know that whey protein concentrate is much less expensive than whey protein isolate. When you are buying a protein product that has whey protein concentrate as its primary source of protein, even if it contains a little whey protein isolate blended in, it will have more lactose than an all-isolate product. The product might even contain more lactose than protein. So it's a good idea to read labels carefully, in a questioning frame of mind. You can find reliable information about the typical composition of whey protein isolate and whey protein concentrate at a site supported by three national dairy associations: http://www.doitwithdairy.com/infolib/ingspecsheet/ingspecwhey.htm UNJURY(TM) uses only whey protein isolate. Thank you very much. Martha M Krachenfels MS RD President UNJURY Protein Supplements [email protected]

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