Soybeans and Testosterone

It’s time for a little myth busting. Y’all know we do that around here now and again. Let’s roll.

I’ll never forget the day a teammate of mine saw me destroying one of my signature giant salads topped with organic soybeans. “Kap, you know that soy murders testosterone, right?”

I nearly spit my bite out right there.

I went home and immediately started Googling. Check out this headline from Men’s Health:

SOY’S NEGATIVE EFFECTS

Is This the Most Dangerous Food for Men?

The unassuming soybean has silently infiltrated the American diet as what might just be the perfect protein source: It’s cheap and vegetarian, and could even unclog our hearts. But there may be a hidden dark side to soy, one that has the power to undermine everything it means to be male.

Well now, that’s scary. Here I am avoiding Cheetos, but it’s really the organic edamame with sea salt that I should be worried about. I’m so irresponsible. How about the sharp play on the male ego? Never fails.

Perhaps I should have considered my original source. This dude wasn’t a student of the health game, and Men’s Health is just scare-mongering. Men, go ahead and enjoy that edamame at the sushi bar. Ladies, don’t worry about soybeans’ contribution to breast cancer.

Here’s the thing, soybeans in their original, whole food form have solid vitamin and mineral pop. From whfoods.com:

Soybeans are an important source of the minerals copper, manganese, molybdenum, phosphorus, and potassium; the B vitamin, riboflavin; and omega-3 fatty acids (in the form of alpha-linolenic acid).

Okay, but at 39 years old, I can’t be trading testosterone for minerals. I sort of need it for my weight-training program. Many women have concerns related to breast cancer and will be happy to get their B vitamins elsewhere. Worry not; here’s the real deal:

As far as any downside, most of the health concerns about soy stem from its concentration of phytoestrogens, a group of natural compounds that resemble estrogen chemically. Some experts have questioned whether soy might lower testosterone levels in men and cause problems for women who have estrogen-sensitive breast cancers. Animal studies have found, for example, that large doses of phytoestrogens can fuel the growth of tumors.

But phytoestrogens mimic estrogen only very weakly. A number of clinical studies in men have cast doubt on the notion that eating soy influences testosterone levels to any noticeable extent. And most large studies of soy intake and breast cancer rates in women have not found that it causes any harm, said Dr. Anna H. Wu of the Keck School of Medicine at the University of Southern California. In fact, work by Dr. Wu and others has found that women who consume the equivalent of about one to two servings of soy daily have a reduced risk of receiving a diagnosis of breast cancer and of its recurrence.

Look, I eat very few soybeans. I’d say my soy products are limited to sushi bar visits and an occasional salad topper. This post is more of a reminder. Let us not be sheep. We can all do the Google search I did. My teammate meant no harm; he just wore wool to the ballpark that day. It was late September in Colorado, after all.

Kap

  • Alex Beer

    Kap,

    You are right. Anytime you hear that something might lower testosterone, it’s freak out mode. I think if someone came out with a study that oxygen lowered T levels, I’d probably try to stop breathing. Interesting post as always. My day is not complete without reading the blog. Keep them coming my friend!

    • Gabe Kapler

      Dig, Alex. Thanks.

  • Ed H

    There’s a pattern out there and it’s related to money. If I’m selling something (say a supplement for arguments sake) and there’s something better and cheaper available, how do I best market my product? By spreading negative propaganda about the better option. Even better is to seed that propaganda and allow others to spread it for you…

    • Gabe Kapler

      Indeed.

  • https://twitter.com/athleticone01 Michelle

    On the flip side, I know women who believe this and throw down anything with the word ‘soy’ in it because they are afraid of testosterone…just like lifting will make them big. Okay.

    • Gabe Kapler

      So silly.

  • Chester

    I have heard arguments on both sides on the soy/testes issue. Also a sidenote as to soybeans, likely the most widely-grown GMO/GE crop:

    From Whole Foods site:
    http://www.whfoods.com/genpage.php?tname=dailytip&dbid=290

    Another take:
    http://www.gmo-compass.org/eng/grocery_shopping/crops/19.genetically_modified_soybean.html

    A move made for economic reasons, to save money on pesticides.

    Effects of eating GMO foods? Who knows.

    • Gabe Kapler

      Appreciate this.

  • Chester

    Hope I am not overstepping boundaries by inserting this recipe for OATMEAL had in Hawaii – had me feelin high-energy and all kindsa good. It even tastes great at home (which is not in Hawaii). Kept back craving for a snack until lunch:
    - Cup Steel-cut Oats (instant I think is fine, if need be)
    - once boiling, add some golden raisins, quick dash of sunflower oil, pinch of K Salt
    -When done stir in honey, and depending on your desired consistency, add milk and/or water (I thought was good without the last two)
    -mash a banana into it; or ½ banana
    -coconut toasted, fresh shaved or flaked (unsweetened is fine)
    -toasted sliced/mashed almonds
    -add approx ½ c chopped pineapple (if you want)
    -add other stuff you like, for instance sunflower seeds or pepitas.

    Share with your significant other.

    • Gabe Kapler

      Oatmeal recipes are always welcome.

  • Chester

    Or eat it alone

  • http://kbeyazdancer.wordpress.com kbeyazdancer

    I’ve heard the argument many times. A lot of my weight lifting male and female friends have asked my scientific expertise on this question.
    Bottom line: only wear wool when you’re chilly baby. Wait-I’m allergic. Problem solved.
    -Kelebek

    • http://kbeyazdancer.wordpress.com kbeyazdancer

      p.s. I am not a sheep. I’m a butterfly :)

      • Gabe Kapler

        Thanks, Kelebek.

  • http://gravatar.com/cesarvargasdesign cesar

    One thing that I dislike are these articles (In the same magazine sometimes) tend to say some click inducing tagline of “The best food for weight gains” “The worst food you are feeding yourself”

    Sometimes chocolate milk is good for you, other times its the worst thing you could do..So yeah, do your research…

    • Gabe Kapler

      Tell ’em, Cesar.

  • Kyle G.

    Any foods TO boost testosterone?

    • Gabe Kapler

      Eggs.

      • Kyle G.

        I love eggs. I’ve been eating them in the mornings since my parents made me start to make my own breakfast in the mornings in 7th grade. I was once up to 6 eggs every morning before I just got so used to the taste I hated them. Now I typically just eat 4 eggs a morning. Anyways my short anecdote… Thanks for the reply

  • darby wright

    Good stuff. Keep up good posts

    • Gabe Kapler

      Appreciate it, Darby.

  • Nat

    Very interesting, soy has seemingly gone from a once healthy and low cholesterol protein alternative, to a feared “possible carcinogen” among other claims. It’s funny because although I steer clear of products containing soy, I’ve never blinked an eye eating edamame. I think the difference in my mind is there are so many products these days containing some sort of processed GMO soy, that when I see soy as an ingredient I usually will not consume. And if I’m picking a protein powder, I’m definitely choosing a grass fed whey protein over a soy protein powder. Very interesting article. I agree, people tend to jump the gun quickly to believe something they’ve read or heard without doing the proper research. Thanks!

    • Gabe Kapler

      Thank you, Nat.

  • http://www.thompsontamashii.mobi Duane

    Excellent post however I feel we need to take all food and our environment into consideration when it comes to our health. I love soybeans and been eating them for years with no issues but all it takes is one little trigger to change how our bodies function. Something to think about.

    Hope it was a good weekend for everyone.

    • Gabe Kapler

      Word.

  • Robin

    Then there’s the whole allergy problem. I know many adults developing allergies and soybeans is one of their problems. Also, when my grandson was suspected of having a reaction to milk, the three or four supplements that were given him had no soy content. And when the mom went on a no milk diet, soy milk was not on the list for replacing milk. It’s all very interesting.

  • Dan Rogers

    Just like every journalistic article can say anything the publisher wants, corporations with an agenda can pay academic institutions big money to publish a study that falls in line with their marketing. My thing is whole (organic & grass-fed when possible)foods, fewer than 5 ingredients, and pay attention to your body for individual allergies/changes in your body. I was over 360lbs with a death sentence staring me in the face. Mindful eating is a full-time job with the best of benefits. Do the work, you are worth it! Good spot on Rome today!