Does soymilk have a negative effect on your thyroids

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I was at the grocery store earlier purchasing soy milk. I wanted two bottles chocolate, and vanilla. They only had chocolate. A customer pick up three boxes of Almond Milk, and I ask her if it taste good she proceed to tell me soymilk affects your thyroid. She said it can cause goiter. She said she is a RN, and has read studies about this adverse effect. I purchase the almond milk, to give it a try. Have anyone ever heard this? A coworker told me also awhile back soy cause cancer. These are probably false.