Dispelling nutrition myths, ranting, and occasionally, raving


3 Comments

Will the Impossible Burger give you boobs?

A13usaonutL._CLa_2140,2000_71q5brCxSVL.png_0,0,2140,2000+0.0,0.0,2140.0,2000.0._UL1500_

I saw this article making the rounds on Twitter and I couldn’t resist blogging about it. For those who haven’t seen it, and can’t be bothered to click the link (honestly, it’s not worthy of your clicks) it’s some sort of “Big Meat” propaganda. The headline reads: DOCTOR: Burger King’s ‘Impossible Burger’ has 18 Million Times More Estrogen Than Regular Whopper: Burger King’s Impossible Burger may cause men to grow breasts. Total clickbait and I, for one, could not resist it.

According to the article, the Impossible Burger has 44 mg of estrogen while the Whopper has a mere 2.5 ng. Allegedly this means that if a hypothetical man were to eat four Impossible Burgers a day (for some indeterminate number of days which I feel is a pretty huge omission) he would grow breasts.  Apparently, eating four Impossible Burgers a day is the same as drinking six glasses of soy milk a day which is well known to be the magic number of glasses of soy milk at which men will spontaneously grow breasts. Except, I can find absolutely no evidence that this is true. According to Harvard, there are a number of reasons why men may grow breasts including certain medications and medical conditions but there is no mention of soy (which is the source of the phytoestrogens in the Impossible Burger). Fellow RD, Andy has also dispelled many of the myths around soy consumption including claims that it can have a detrimental effect on men’s health in this article.

You may also have noticed that the doctor who wrote the original smear piece on the Impossible Burger refers to estrogen while I’m talking about phytoestrogens. Despite what you may have heard, these are not the same things. Estrogen is the hormone found in humans and other animals while phytoestrogens are the plant-based forms of estrogen. Phytoestrogens do not have the same effect on us as estrogen does. I think it’s also worth pointing out that all of these men who are now afraid to eat the Impossible Burger because they might get boobs that there is already a LOT of soy in many foods that you’re probably eating every day. There is soy in many processed meats (yep, your good old manly hot dogs, deli meats, and many beef burgers) contain TVP (textured vegetable protein, aka soy, as a cheap filler); many of your sports supplements like bars, shakes, and protein powders contain soy; breakfast cereals, etc.

The article I referenced above was from a publication called National File which purports to be “America’s newest conservative news source”. This automatically raises red flags for me. As it’s pretty much proclaiming to be fake news. The original article by Dr Stangle was published in Tri-State Livestock News. Hmm…. could such a publication possibly have any bias? Surely they would never want to paint beef burgers in a more favourable light than plant-based burgers. And not that this means that he’s not knowledgeable about human nutrition but the doctor who wrote the article is a Doctor of Veterinary Medicine. This doesn’t instil great confidence in me that he’s an authority on human nutrition. I also wonder about where he gets his money from; certainly not soybean farmers but perhaps cattle ranchers? I can’t find much about him online but I did find an article that mentions he’s a member of the American Association of Bovine Practitioners.

All this to say: sorry everyone who’s been scarfing down four Impossible Burgers daily in the hopes of growing breasts, you’re going to be sorely disappointed. I still wouldn’t recommend eating that many burgers a day (Impossible or otherwise) but they’re not going to give you breasts.


Leave a comment

Will soy give you strong bones? Spoiler: maybe, if you’re a rat

ZomboMeme 01102018175844

Recently there was a lot of criticism of a NYT article about what’s making us fat that was really about what diets might make mice fat. Along the same lines is this research from the University of Missouri that found soy diets might increase women’s bone strength.

The study was not on actual human women though, of course. No, this study’s participants were rats. These rats are apparently a good proxy for human women because they are selectively bred to have low fitness levels and, “average American women are relatively inactive both before, and especially after, menopause”. Essentially, both American women (particularly older women) and these rats are lazy so they’re totally interchangeable when it comes to research. As it’s much harder to get women to adhere to specific diets, and there are far more variable to control for and ethical considerations when it comes to human experiments, it just makes sense to use rats.

So, these rats were divided into two groups: one group was fed a corn-based diet (you know, just like the average post-menopausal American woman eats) and the other was fed a soy-based diet. The results showed that: “the tibia bones of the rats that were fed soy were stronger compared to the rats who were fed the corn-based diet, regardless of ovarian hormone status”. Leading to the conclusion that: “Bottom line, this study showed that women might improve bone strength by adding some soy-based whole foods to their diet”.

To recap: rats were fed either corn-based rat food or soy-based rat food. The rats fed the soy-based rat food were found to have stronger leg bones. Therefore, human women can increase their bone strength by eating more soy.

This is ridiculous. We are not rats. We do not live the same lives as laboratory rats. We are not all sedentary. We do not eat the same food as laboratory rats. It is a huge leap to say that this study in rats shows that consumption of soy by women can lead to stronger bones. We are not eating a homogenous diet of corn-based rat food. The forms of soy we consume as humans are very different from that in rat food (e.g. tofu, soy beverage, tempeh, edamame, TVP).

Perhaps soy-based foods can increase bone strength in humans but this study doesn’t tell us that. This study tells us that this breed of rat has stronger bones when fed a soy-based diet than when fed a corn-based diet.


1 Comment

Don’t fear the tofu

photo (14)

Tofu is one of those foods that many people balk at. As a former picky eater, I’m here to tell you: it’s not that bad, it can actually be delicious. There are a few thing that may help you overcome your fear of tofu…

Not all tofu is created equal. Quality varies widely between brands. In my experience, the best tofu is locally produced (Acadiana Soy here in Nova Scotia is my favourite. It’s available at the Halifax Farmer’s market, Local Source Market, and Pete’s Frootique, check their website for other retailers). If you can’t find local tofu, get the stuff from the produce section of the grocery store. Don’t buy the store brand, it’s usually inferior. There is also shelf-stable tofu, I wouldn’t use their firm tofu but the soft-silken tofu works well for desserts and smoothies.

How you prepare your tofu is going to make a huge difference. Ease yourself into it by adding it to other dishes. You can marinate firm tofu and then pan-fry it so that it’s nice and crispy on the outside and add to stir-fries, noodle dishes, and salads. You can also use tofu in desserts. This Heavenly Pie recipe is one of my favourites. At sushi restaurants, try the Agedashi tofu as an appetizer.

Tofu is a great source of protein (150 g of firm tofu has 21 g of protein). Depending on how it’s prepared (check the label) it can also be a good source of calcium (234 mg). Contrary to popular belief, consuming tofu is not dangerous for women who have suffered breast cancer (1). In fact, consuming healthy foods like tofu is likely to be better for breast cancer sufferers in comparison to many foods and beverages that are common in the Western diet.

If you don’t love tofu, that’s fine, everyone has different preferences. Just don’t write it off without trying it in a few different ways.