Does Soy Milk grow your boobs?!

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Huh? Was this doctor a moron? Unless she drinks soy milk all day every day, her boobs are not going to grow. And even then, chances are nothing will happen. Now doctors are stupidly falling for these false soy statements?

vegan :D
I drink soy milk every day, my boobs have not gotten any bigger at all.

Breast growth is controled by hormones. If soy milk has these hormones then... but!
Breast growth is caused by the hormone Prolactin and it can be produced naturally by nipple stimulation. So you can control how big your breasts are yourself. But it takes regular stimulation (massage) several times each day everyday, for several weeks, to keep the hormone levels up, to make the glands in them grow. Skipping a few days puts you back at square one.
It simulates breastfeeding and it prevents cancer as well as growing them and also suppresses period extremes.
http://www.ncbi.nlm.nih.gov/pubmed/37916…

A few summers ago, I went way overboard with soy products and one of the side effects was that my chest grew rapidly with no significant weight gain in other areas of my body. I had to eat and drink a TON of soy before this happened, but it did happen. However, any doctor who would suggest this or any other sort of hormone treatment to a young girl simply because she hasn't developed yet should not be trusted. If there actually is something hormonally wrong with your friend, she's not going to be able to solve it with soy milk. Your friend needs to get a new doctor.

No.

Your friend is pulling your leg. No doctor would give such advice to anyone, let alone a barely pubescent girl (your Q&A shows you're 13, I assume this friend is a similar age).

Soya proteins contain isoflavones, which can mimic a weak oestrogen effect. It's not the same as the oestrogen your own body makes, it is 1,000 times weaker than your own body's oestrogen, and so will not have any effect on anyone's breasts.

It is true because soy causes an increase in the female hormone, estrogen, which can increase your bust size when you keep drinking soy milk products.

YES

My wife just said "I wish..."
No it does not. Asians are probably the biggest consumers of soy/soy products and Asian men/women are not known for their "bountiful" chests.