"That may not be the case because milk naturally contains hormones that can effect the endocrine system."

NATURALLY CONTAINS HORMONES. This isn't about added hormones for growth. But the fact it contains natural hormones which grow baby cows as fast as possible. Basically, unless you're a calf, you shouldn't drink milk. I'm less sure about processed milk products (butter, hard cheeses, etc)

Do the cows know it's illegal to put hormones in milk? They don't seem to be respecting our laws.

fair comment about existing hormones. Adding the modifier 'added' makes my statement more accurate, but misses the criticism of drinking milk at all due to the inherent levels of hormones. I am biased to assume the concern was about added hormones because it's a specific problem addressed by Canadian laws.

That said, if you think the science supports the case for limiting oestrogen intake in our diets, a practical step might be to lobby for limits to the use of those hormones in dairy production (like most other western countries) as a first step. Trying to somehow have people stop consuming dairy products seems like a much larger hurdle, limiting it's effectiveness in actually reducing consumption of those hormones.