Just a thought re the calcium---a respected doctor, the first female pediatrician to practice at Egleston Hospital of Emory University here in Georgia, wrote (a few years ago) a child-care book entitled "Every Child Deserves a Chance". In the book, Dr. Leila Daughtry-Denmark wrote of our society's obsession with bovine milk as the only source of calcium, and pointed out that humans are alone among the mammals for thinking that their young must have milk beyond the normal age of nursing, and to try to provide them such milk from other species. She is a huge proponent of breastfeeding children mother's milk, but argues that human breastmilk is perfectly balanced for human babies--while cow's milk is perfectly balanced for turning a 20-pound calf into a 2,000 pound bull. Cow's milk is far too heavy with fat for human babies (which is why you can't feed a baby straight cow's milk), nor does she feel it's healthy for any human. She points out to those concerned about calcium--"Where does the cow get the calcium?", and extols the virtues of green leafys and broccoli as the best human sources of calcium.

Given that she is now 111 years old, and still going strong, I tend to put faith in her health pronouncements.

If you'd like more info, Wikkipedia has an article about her at http://en.wikipedia.org/wiki/Leila_Denmark