> The results of this meta-analysis suggest that neither soy foods nor isoflavone supplements alter measures of bioavailable T concentrations in men.
I would have to read the rest to find out how much soy protein or isoflavones was given, for how long, in addition to what the diets were, but from the above, that does not debunk anything... All it states is that in this particular expirement, they don't think it causes lowered T levels. This is a world away from saying that soy isoflavones don't have estrogen-like effects, nor interact or effect estrogen receptors, nor have a negative effect on the brain.
And I can't even imagine why they did not check estrogen levels.
>All it states is that in this particular expirement,
That sounds like you didn't actually read the abstract. It wasn't a "particular experiment". It was forty-seven experiments.
>they don't think it causes lowered T levels.
... or SBHG levels, or FAI.
>This is a world away from saying that soy isoflavones don't have estrogen-like effects, nor interact or effect estrogen receptors, nor have a negative effect on the brain.
Well, no, it's not a world away from that, because one of the major effects of estrogen on men is to affect androgen levels, so if these isoflavones don't do that, then it is unlikely that they are affecting the body the same way that estrogen does. It doesn't rule out the possibility that soy isoflavones affect the human body, but it puts a huge hole in the entire basis for thinking that they might.
> Well, no, it's not a world away from that, because one of the major effects of estrogen on men is to affect androgen levels
You can't say 'ohh it doesn't seem to decrease T levels, so it must not be estrogenic!' It could still product other estrogen like effects.
> but it puts a huge hole in the entire basis for thinking that they might
How so? There are so many other ways for the isoflavones to affect the body besides lowering T levels.
We already know that there are a number of people reporting feminization, health, and gastro symptoms from consuming unfermented soy products. That's hard to ignore. Something is going on.
So far all the "pro soy" people have posted exactly zero references.
I would just like to check for myself.