[surferjoe2007]

Yasmin does seem to have way less progestin than progestin than progestin only pills.

Hm, why would you assume it? Well the progestin in Yasmin (drospirenone) is not available in progestin-only BC formulas so I have nothing to compare it with, but for other types of progestin medications it seems the other way around: when they’re combined with estrogen their amount is about twice as high as that of when they’re used alone.   
 Ugh well I'd hate to contribute to my highly probable E-dominance with taking the pill..

Soy isoflavones are probably just as good as RC if not better.

Thanks. What would you say about the dosage, though? (38mg/1 pill). Is it adequate or too miniscule? 

As you're knowledgeable in nutrition, I was also wondering what's your take on cruciferous vegetables? I've heard they affect estrogen metabolism (break it down?), can it be counterproductive for NBE? It sounds so but then again I saw people mentioning these veggies in boob-friendly nutrition so I'm still confused here.

Also saw you briefly mentioning insulin, would you elaborate a bit? Are its spikes pro-NBE? I've been on a keto-like eating style which is associated with low stable insulin levels so again I wonder if it's a bad thing when it comes to NBE programs.

I couldn't find clear information on combined BC.  I could be wrong.  I assumed because it was 21 day that it was more of an estrogen effect but I'd have to read more.

1 pill of soy isoflavones is plenty because it is highly concentrated.  More probably won't hurt, but 1 pill is already probably past the point where more doesn't have more effect.

Cruciferious vegetables can destroy some estrogen, but not too much.  I've heard it claimed that it destroys "bad" estrogen.  I don't know how true it is, but there is some sort of studied health benefit to the compound that does this.  Besides the compound that breaks down estrogen, many of them are packed with nutrients that are good for health in general including NBE.  Especially broccoli.

Insulin has a minor beneficial effect on NBE.  In general, not necessarily the spikes.  That doesn't matter much.  More importantly Keto is super nutrient poor including many nutrients that are essential to NBE.  And a multivite won't replace most of them.  I've also read about high protein diets shrinking boobs tremendously.  A healthy diet is very high in whole food carbs, so it isn't compatible with the latest no carb fad.  Though refined carbs are very bad for you, just like any refined foods.  Including protein powder.  For NBE, and for health, the way to go is "low" protein.  By which I mean protein is in every food group so even if you tried to avoid protein on purpose you are likely to double your needs.  If it has DNA then it has protein.  Even fruit has some, and it all adds up.  And more importantly eat whole fresh foods.  If you switch to lots of refined carbs you won't be any better off.  There are plenty of other great diets that don't go against the recommendations of every major health/medical organization, general dietary guidelines and so on.  I'd try one of them.