Further research, from other sources, reveals this:
We hear a lot about the possibility that cow's milk is - in fact - not good for us. Doctors say cow's milk can lead to iron deficiency anemia, allergies, diarrhea, heart disease, colic, cramps, gastrointestinal bleeding, sinusitis, skin rashes, acne, increased frequency of colds and flus, arthritis, diabetes, ear infections, osteoporosis, asthma, autoimmune diseases, and more, possibly even lung cancer, multiple sclerosis and non-Hodgkin's lymphoma.
One of these doctors is Frank Oski, M.D., author of Don't Drink Your Milk! is the Director of the Department of Pediatrics of Johns Hopkins University School of Medicine and Physician-in-Chief of the Johns Hopkins Children's Center. He is the author, co-author, editor or co-editor of 19 medical textbooks and has written 290 medical manuscripts.
Another outspoken critic of cow's milk is Dr. William Ellis, a retired osteopathic physician and surgeon in Arlington, Texas, who has researched the effects of dairy products for 42 years. Dr. Ellis is listed in Marquis' Who's Who in the East, Leaders of American Science, the Dictionary of International Biography and Two Thousand Men of Achievement. Dr. Ellis says dairy products are "simply no good for humans... There is overwhelming evidence that milk and milk products are harmful to many people, both adults and infants. Milk is a contributing factor in constipation, chronic fatigue, arthritis, headaches, muscle cramps, obesity, allergies and heart problems."
When Washington D.C.-based pediatrician Dr. Russell Bunai was asked what single change in the American diet would produce the greatest health benefit, his answer was, "Eliminating dairy products."
Dr. Christiane Northrup, a gynecologist in Yarmouth, Maine, states, "Dairy is a tremendous mucus producer and a burden on the respiratory, digestive and immune systems." Dr. Northrup says when patients "eliminate dairy products for an extended period and eat a balanced diet, they suffer less from colds and sinus infections."
But don't we need to drink milk to get calcium? No. The best way to add calcium to your diet is to eat more fresh green vegetables. Cow's milk is high in calcium, but Dr. Ellis explains, the problem is that it is in a form that cannot be assimilated very well by humans. Dr. Ellis states, "Thousands and thousands of blood tests I've conducted show that people who drink 3 or 4 glasses of milk a day invariably had the lowest levels of blood calcium." Dr. Ellis adds, "Low levels of blood calcium correspond with irritability and headaches. In addition, the low calcium level in milk-drinkers also explains why milk-drinkers are prone to have muscle spasms and cramps. Since calcium is necessary for muscles to relax, a lack of calcium causes muscle cramps, etc." Source