Hey Everyone it’s your local Orange County Personal Trainer, Jon Jung and today we are going to examine the differences between Whey Protein and Soy Protein. Which one is better for you, which one tastes better, and overall which one will you benefit from in the long run.
Make sure you consume enough protein so that your body can build enough lean muscle.
Soy Versus Whey Protein - You Be The Judge
We examined several criteria in the soy versus whey protein debate. In general, the facts considered here are in favor of whey protein, especially if you choose to supplement your protein intake with a glutamine supplement and arginine supplement.
However, that is not to say that it is not a good idea to supplement with soy protein. Soy protein is shown to be an excellent source of protein and can be used effectively in bodybuilding supplementation, particularly for those who are vegetarians or lactose intolerant.
| Soy Vs. Whey Protein | Protein Type | ||
| Criteria | Soy Protein | Whey Protein | Better Protein |
| Biological Value (BV) | 74 | 104 | Whey Protein |
| Net Protein Utilization (NPU) | 61 | 92 | Whey Protein |
| Protein Efficiency Ration (PER) | 2.2 | 3.2 | Whey Protein |
| Amino Acid Score (AAS) | 0.99 | 1.14 | Whey Protein |
| Protein Digestibility Corrected Amino Acid Score (PDCAAS) | 1.00 | 1.00 | Push |
| Protein Digestibility Percentage (PD%) | 95% | 99% | Whey Protein |
| Glutamine per 100g of Protein | 10.5g | 4.9g | Soy Protein |
| mg EAA per g of Protein | 378mg | 480mg | Whey Protein |
| Arginine per 100g of Protein | 7.6g | 2.9g | Soy Protein |
(quoted from build-muscle-and-burn-fat.com)
Which do you prefer, Whey or Soy? I prefer Whey protein! :)
August 21st, 2009 at 10:29 am
I’ve read a several articles claiming there can be side effects of supplementing with soy protein. Since soy contains estrogen, it can lead to increased estrogen production in men, lower blood testosterone levels and reduced sperm counts. Is there any truth to this?