this post was submitted on 24 Oct 2025
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[–] vga@sopuli.xyz 11 points 1 day ago* (last edited 1 day ago) (11 children)

I am slightly surprised that both groups lost a similar amount of fat.

Oh, right, supplements. So similar amount of fat as well. Well, kind of an obvious result and doesn't really say a whole lot about the differences between plant- and protein-based diets.

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[–] punkfungus@sh.itjust.works 88 points 2 days ago (20 children)

More research isn't a bad thing, but this really isn't news. If you're a nerd who's into lifting you'd already know that soy protein is a top tier source of all the important amino acids for muscle gain. And it's cheaper than whey.

It's also not very popular because the manosphere tells men that consuming it will feminize them. Yes, really. They took the "soy boy" thing very literally and ran with it off the deep end.

[–] AnimalsDream@slrpnk.net 30 points 2 days ago (1 children)

People continue parroting this soy estrogen myth even years after it's been debunked too, it's annoying as hell. The phytoestrogen in question is more of an anti-estrogen and may be protective against excess estrogen.

If soy actually caused boob growth, the supplement industry would be all over that.

[–] IronBird@lemmy.world 4 points 1 day ago

bigger issue with these powders and shit (least in the US) is that damn near non-existent food/drug safety oversight means that your probably getting dosed with a bunch of lead or some other contaminate...

[–] OrteilGenou@lemmy.world 54 points 2 days ago (5 children)

I remember about a decade ago talking about tofu recipes with a colleague who lifted and ate a protein heavy diet.

An older colleague heard us and warned us that eating tofu would cause you to have a surplus of estrogen and make you more feminine.

He was telling this to a guy built like a brick shithouse who had eaten tons of soy protein for the better part of a decade.

It's that same old thing, something different comes along and some people just have to parrot anything that goes against that thing, even if it's complete and utter horseshit

[–] ornery_chemist@mander.xyz 2 points 1 day ago* (last edited 1 day ago)

Ugh I had an older colleague, a PhD organic chemist, who was absolutely convinced that soy would make me (m) infertile. I ordered tofu once when out to lunch and he would not stop warning me to "be careful" and to be mindful of starting a family and "you know those studies." When I mentioned that the consensus was at best inconclusive and most likely there is no such link, he said that no, "they" definitely showed that excess soy is bad and that he worried about my reproductive health. Like dude even if eating tofu did cause reproductive health issues, mine is none of your goddamn business. On the other hand, the same guy is also convinced that BPA (another estrogen mimic used esp. in certain plastics) concerns are a total hoax because "they did bad science because their sample containers had BPA in them and it leached into the urine samples giving false positive." Also something about the only evidence of it binding like estrogen was that someone glanced at a crystal structure and halfassedly thought it looked like it might fit and rolled with it for career reasons. Like, I don't know, man, maybe a couple studies used containers made with BPA, but most probably didn't. I haven't read them, but I know you didn't, either. Also, you're literally a petrochemist, you know BPA is mostly used in polycarbonates, and lab plastics, especially for analytical work, are mostly polypropylene or polyethylene designed to avoid exactly this kind of leaching. Honestly.

[–] BigBenis@lemmy.world 6 points 1 day ago

Misogyny is a helluva drug

[–] yermaw@sh.itjust.works 22 points 2 days ago (1 children)

As a human survival trait we need to find a way to shut down misinformation. Knowledge is our path to survival as an animal. Like ants have teamwork and building, wildebeest have speed, plants photosynthesise, humans learn.

By creating and spreading misinformation you're chipping away at pretty much the only thing that keeps us in existence.

Bit of a broad-strokes extreme takeaway from your comment there, but it got to me.

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[–] boonhet@sopuli.xyz 6 points 1 day ago (1 children)

I'm a nerd and into lifting, but I took a pause for oh very many years, so I'm currently still emptying my 2.something kilogram tub of Optimum Nutrition whey protein, which tastes decent enough. Do you have a recommendation on decent tasting soy protein, especially something available in Europe?

I pretty much look like a bear so it's going to be very difficult to feminize me lol

[–] reddifuge@lemmy.world 7 points 1 day ago (3 children)

Meat and dairy contains hormones that increase estrogen and reduce testosterone, not plants.

[–] boonhet@sopuli.xyz 3 points 1 day ago (1 children)

That may be, I was just saying I'm not particularly concerned about it anyway.

[–] reddifuge@lemmy.world 2 points 1 day ago* (last edited 1 day ago) (2 children)

Yeah I know, that's why T levels in the USA has dropped by 20% in the last 20 years and obesity is rapidly increasing.

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[–] LordMayor@piefed.social 82 points 2 days ago (10 children)

Just to be clear, this is about supplements. It’s doesn’t say anything about differences in dietary protein.

The actual title:

Similar effects between animal-based and plant-based protein blend as complementary dietary protein on muscle adaptations to resistance training: findings from a randomized clinical trial

[–] victorz@lemmy.world 24 points 2 days ago (1 children)

this is about supplements

And supplements are largely unnecessary, so this study says absolutely bupkis.

[–] LordMayor@piefed.social 25 points 2 days ago (12 children)

Right, for the average person, protein supplements are unnecessary as long as they are healthy and eat well.

Athletes (and people with body dysmorphia 😬) might struggle to get enough protein in their diet. But, far too many people think they’re in a position that would warrant supplements when just a little attention to diet is sufficient.

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[–] GreenKnight23@lemmy.world 49 points 2 days ago
[–] miked@piefed.social 25 points 2 days ago (6 children)
[–] tocopherol@lemmy.dbzer0.com 7 points 1 day ago

Plants in general can contain more lead from soil whereas animals will filter it out before you consume their flesh, but the amounts they found were still well below what is recommended for other plant products such as fruit juice. After looking into it when I saw that study it kinda sucks how much lead is still in a lot of things. I'd be curious to see a bigger study comparing the lead found in people that use the plant-based powder or are vegetarian versus meat-eaters.

[–] greedytacothief@lemmy.dbzer0.com 20 points 2 days ago (4 children)

Oh yeah, I forgot about this. It's going to be tough to do anything about this with the current administration in office.

Also there's arsenic is lots of brown rice. I think the stuff from California or India is pretty safe.

[–] Corkyskog@sh.itjust.works 5 points 1 day ago (1 children)

There’s no reason to panic if you’ve been using any of the products we tested, or if you take protein supplements generally. Many of these powders are fine to have occasionally...

I found this quote hilarious, I don't know anyone who takes protein powder occasionally. They are either taking it mosts days out of the week or not at all in my experience.

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[–] quick_snail@feddit.nl 4 points 1 day ago (4 children)

Wait till you learn what happens when you eat animals

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[–] reddifuge@lemmy.world 3 points 1 day ago

You're exposed to far more lead and other heavy metals living near a road than with this. So no, not a measurable amount.

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[–] RBWells@lemmy.world 36 points 2 days ago (12 children)

There was no control group doing the workouts without protein supplements?

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[–] quick_snail@feddit.nl 5 points 1 day ago

But one of them didn't smell as bad as the other

[–] aberrate_junior_beatnik@midwest.social 28 points 2 days ago (34 children)

Also FYI: if you are getting enough calories, you are almost certainly also getting enough protein. The RDA for protein is quite low, 0.8g per kg bodyweight, or about 10% of your caloric intake. You can meet this by eating just grains. However, as mentioned in the linked source, the RDA is intended to prevent nutrient deficiencies, not provide an optimal level of intake.

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