Interesting info on how Milk leaches calcium from your bones

There are 28 amino acids in nature. The human body can manufacture 19 of them. 
The other nine are called "essential." We must get them from the foods we eat.
One of those "essential" aminos is methionine.
One needs methionine for many human metabolic functions including digestion, 
detoxification of heavy metals, and muscle metabolism. However, an excess of methionine can be toxic.


Methionine = C-5, H-11, NO, S


Methionine is a good source for sulfur. That's the problem. Eat foods containing too much methionine, and your blood will become acidic. The sulfur converts to sulfates and weak forms of sulfuric acid. In order to neutralize the acid, in its wisdom, the body leaches calcium from bones.
"Dietary protein increases production of acid in the blood which can be neutralized by calcium mobilized from the skeleton." {American Journal of Clinical Nutrition, 1995; 61,4}
Animal proteins contain more methionine than plant proteins. Let's compare cow's milk to soymilk:

Methionine in 100 grams of soymilk	.040 grams
Methionine in 100 grams of whole milk	.083 grams
Methionine in 100 grams of skim milk	.099 grams

Now, let's compare 100 gram portions of tofu to meat:
(All of the meat products are lean and without skin)
Silken soft tofu: .074 grams
Hamburger: .282 grams
Hard boiled egg: .392 grams
Roast ham: .535 grams
Baked codfish: .679 grams
Swiss cheese .784 grams
Roast chicken: .801 grams
In 1988, N.A. Breslau and colleagues identified the relationship between protein-rich diets and calcium metabolism, noting that protein caused calcium loss. His work was published in the Journal of Clinical Endocrinology (1988;66:140-6).
A 1994 study published in the American Journal of Clinical Nutrition (Remer T, Am J Clin Nutr 1994;59:1356-61) found that animal proteins cause calcium to be leached from the bones and excreted in the urine.