Why is there soy in Jimmy Joy Plenny?

In the Asian population, soy is present in many traditional dishes and cooked in various ways, such as heated, blended or even, fermented. Nowadays, soy has also made its way into the Western diet [1]. Indeed, soy has quite some features that make it the perfect fit for Jimmy Joy Plenny. 

Soy has a low carbohydrate content but high protein contentIt is a good protein source because it has a far lower ecological footprint than animal protein, it has a complete amino acid profile and a Protein Digestibility Corrected Amino Acid Score (PDCAAS) of 1.00 [1] which is the best score possible. It is far better than other plant based protein sources for example rice 0.42 or pea 0.7 [7] [8]

A bunch of years ago, our beloved World Health Organization (WHO) and Food and Agriculture Organization (FAO) felt the need to assess the quality of all the different proteins you could end up eating, therefore, they established the so-called PDCAAS.

As you read on our blog about macronutrients, proteins are made of many amino acids and the PDCAAS evaluates the quality of that protein by comparing its amino acid composition to what our body can use. The highest PDCAAS value that any protein can achieve is 1.0 which is the case for whey protein, casein and our favorite plant-based protein: soy! [2]

What are the health effects of soy?

First of all, the soy flour contains 40% protein, which has a full bulletproof amino acid profile, providing all the essential amino acids. So, with the use of soy flour and the extra soy protein isolate each meal of Plenny Shake provides all the required proteins and all the required essential amino acids.
Soy flour contains 20% fats, from which half is polyunsaturated fats and quarter monounsaturated fats. The fats are very helpful in the absorption of the fat-soluble vitamins and due to its slow digestion, the fats provide a long satisfying feeling of being full after eating a Plenny meal.
Because of soy flour Plenny also gets a great amount of fibers from the shell of the soy bean. An astonishing 14,5 gram of fiber per 100-gram soy flour there is! And to top it off the soy provides a lot of nice minerals and some vitamins.
We not only use soy for its great nutritional values, it also has a great flavor. Every Plenny Shake has a very nice nutty flavor tone due to the usage of soy flour as ingredient.


Phytoestrogen and lack of masculinity, myth or reality?

Soy contains isoflavones, which have a molecular structure resembling that of estrogen, which is why they are called phytoestrogens. Phyto means plant. The way our body processes phytoestrogens is by first, digesting them with the help of the gut microflora, next, they are absorbed by the epithelial gut cells and finally, they are conjugated in the liver until they are finally excreted [3]. Due to similarities in the chemical structure with estrogens, phytoestrogens can bind to estrogen receptors and exert similar function as they do [4].   

It is true that estrogens have been traditionally considered as the female hormone. However, in 1990s there was a paradigm shift since it was discovered that the estrogen was also present in males. Initial studies suggested that estrogens had a deleterious effect on male reproduction. More recent studies have reported that estrogens are actually needed for normal male development [4].

Studies report that phytoestrogens have beneficial health effect such as lowering the risk of cardiovascular diseases, obesity, breast cancer or type 2 diabetes, among other [5]. Soy is safe to all individuals to consume except for those people allergic to soy, which is a relatively uncommon allergy in comparison with other allergies.   


Will eating soy give me (man)boobs?

Wow, chill. Where does this question even come from? We’ve barely explained what soy is. But apparently this is a very pressing question for many of you, so let’s get into it.

First, science. This concern might arise from similar structure found between soy isoflavones and estrogen—the hormone that causes typically female characteristics such as the development of breasts. [6] Ooh, the B-word. Scary.

Fear not! According to a study published by nutritional scientist Trudy Voortman and her colleagues from the Erasmus Medical Center in Rotterdam, there’s no scientific reason to be afraid of extreme hormonal activity or imbalance as a side effect of consuming soy. THANK GOD! As it turns out, isoflavones are actually good for you.

Isoflavones have an immensely positive effect on how your body consumes and uses protein, all the way down to your blood vessels and cells. This information comes from the highly reliable sounding book Sustainable Protein Sources by the highly reliable sounding Sudarshan Nadathur, Janitha P.D. Wanasundara, and Laurie Scanlin.

Voortman also cited studies that show that the isoflavones in soy can even help lower the risk of prostate cancer for men. And not getting prostate cancer is a hell of a lot better than having to shop for a bra.

But wait, there’s more!

Soy is water saving AF.



Eating a 100g soy burger instead of a 100g hamburger saves a whopping 1,327 liters of water. That’s about the equivalent of showering fifteen times. 

Crops account for 12% of the earth's surface. 75% of these crops are used for animal feed. So instead of using crops for food, we feed them to livestock such as cows. Very ineffective. 

Livestock such as cattle occupy 26% of the earth's surface and are actually the main cause of deforestation. Their ruthless methane farts are also destructive to the ozone layer, which is pretty much the only thing that keeps the sun from turning us into human barbecue. Basically, we’re cutting down huge parts of the world’s forest to make room for farting cows that also consume 75% of our crops.

Food science is an ever-evolving field of science that we continue to monitor with great care to deliver the healthiest meal possible. We mention sources below so you can do too.


1. Rizzo, G. and L. Baroni, Soy, Soy Foods and Their Role in Vegetarian Diets. Nutrients, 2018. 10(1): p. 43.

2. Hess, J., & Slavin, J. (2016). Defining "Protein" Foods. Nutrition today51(3), 117–120. doi:10.1097/NT.0000000000000157

3. Desmawati, D. and D. Sulastri, Phytoestrogens and Their Health Effect. Open access Macedonian journal of medical sciences, 2019. 7(3): p. 495-499.

4. Hess, R.A. and P.S. Cooke, Estrogen in the male: a historical perspective. Biol Reprod, 2018. 99(1): p. 27-44.

5. Rietjens, I.M., J. Louisse, and K. Beekmann, The potential health effects of dietary phytoestrogens. British journal of pharmacology, 2017. 174(11): p. 1263-1280.

6. Messina, M., Soy and Health Update: Evaluation of the Clinical and Epidemiologic Literature. Nutrients, 2016. 8(12): p. 754.

The World Health Organization has selected the PDCAAs as the best measurement for protein digestibility, scores are from the following sources:

7. Hughes GJ, Ryan DJ, Mukherjea R, Schasteen CS. Protein digestibility-corrected amino acid scores (PDCAAS) for soy protein isolates and concentrate: criteria for evaluation. J Agric Food Chem. 2011 Dec 14;59(23):12707-12. doi: 10.1021/jf203220v. Epub 2011 Nov 16. PubMed PMID: 22017752.

8. Phillips S. M. (2017). Current Concepts and Unresolved Questions in Dietary Protein Requirements and Supplements in Adults. Frontiers in nutrition, 4, 13. doi:10.3389/fnut.2017.00013

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