I have researched medical trials, health papers and the affects of vitamins for 10 years. Here is my take on it:
There is quite a bit of calcium in the American diet. Alot of foods have calcium. The problem is not enough magnesium. Magnesium is REQUIRED by the body to absorb all that calcium.
People are getting an overload of calcium but can't absorb it without magnesium. (Remember, they now even add extra calcium to processed and canned foods.) This excess blood calcium creates hypercalcemia. Excess calcium is then released into soft tissues, (arteries, bladder, kidney, lung, heart) eventually hardening them. So the issue is NOT calcium, (since we get plenty in our diet) the issue at hand is magnesium. These two minerals go HAND IN HAND.
Cow milk has 8 times the calcium to magnesium ratio! I'm not totally bashing milk, but milk should be drank in small amounts AND magnesium needs to be supplemented. In fact magnesium should be supplemented by everyone. Further, pasturized milk has BILLIONS of bacteria in it- yes, this bacteria was killed when it was heated, BUT, those dead organisms release their toxic (excrement) when they die ...into the milk. Humans still have to process that toxic waste through the liver/kidney and out of our bodies.
Certainly subsituting Rice milk would work fine in small quanities (for example, over cereal.) I wouldnt go out of my way to feed it to them in cups to drink.
Soy isn't advisable because it creates thyroid problems. SOY is estrogenic.
Feeding a child soy formula is equivalent to giving 5 birth control pills a day.
I DID feed my baby soy before I knew this, and now at 12, she DOES have major health /thyroid issues. Her health issues are what started my quest for answers and my passion for medical research.
Formula was made for babies who were (not breastfed) and not completely on solid foods. At one year old, your children should be able to switch over to a food diet with no problem. ALL formulas now have a high amount of Iron in them- most people don't realize that Iron is a HEAVY METAL and should not be supplemented unless someone has a clear tested blood deficiency. Our body only uses TRACE amounts. IRON is easily toxic. Especially in the tiny bodies of babies. It does not leave tissues- it builds up to toxic levels. 30% of pediatric deaths in children were caused by iron supplements. Many of these under a doctor's supervision! So yet another reason to get away from formula.
Finally, another thing many do not know, is that there is no set "formula" for formula. There is no standardized recipe. They can put in anything they want to.