B.H.
Good day M.,
My son is almost 2 years old and we use only organic milk. I don't know of any hard evidence, but we noticed that when we do "down grade" to traditonal milk, he is very moody and hyperactive. My son has been on organic for almost 6 mths. We drink to close to a 1/2 gallon a day, sometimes. We love milk! :) I hope this helps you. If you do find some hard evidence, can you please let me know. I would love to have the information. Have a great day!