Hi - I defintely can tell you first hand that Dairy products affect behavior. My Daughter is 6 years old and as of last summer she was eating dairy...she was also having temper tantrums beyond words, constipation and allergies...runny nose etc. Last summer, after much aggravation and tantrums, my (3) kids no longer eat any dairy products...It was hard at first, but I saw results immediately. My 10 year old son has not had any colds, asthma, or bronchitis for a year and is off his allergy medicine. My 12 year old son who had constipation problems since he was born - no longer has problems. I too went off dairy and lost 30 pounds. Go to www.notdairy.com and look at some of the side effects and diseases associated with eating dairy. It is something else. America will catch on soon enough. My Pediatrian did not agree either because of his concern about calcium intake but I saw results right away and did the research I needed to find out what foods were rich in it and supplements that had calcium. The first they do when a woman has breast cancer is take her off dairy...interesting isn't it. Any good Herbalist will support you. Good luck to you and just know that milk is a 4 letter word! Peace - K. H.