Well first it wasn't a "study", it was a report of two case studies by the CDC. The CDC didn't set out to "look" for vitamin B-12 deficiencies in Vegan mothers but only found two, nor did they set out to "study" the risks of Vegan diets. These particular cases were brought to the attention of a CDC investigator by physicians or public health officials, and they released this report as an advisory.Remember this "study" is based on two participants. The point of the study *should* be that B12 deficiency causes newborn brain damage - the fact that they are vegan is incidental. They could've easily picked two mothers who ate meat who had some other deficiency anyway.
The fact that they were Vegan is not at all incidental. These are two people who DELIBERATELY chose a diet they believed to be "healthier" and wound up giving their children developmental brain abnormalities. The significance is IRONY.
Actually, the health benefits of both vegetarian and Vegan diets are only measurable or detectable when they are deliberately compared with a 'typical American diet' rich in animal products and fats. This is truly what it means to compare apples and oranges, by comparing a particularly small subculture of people who are so zealously concerned about their health they have radically altered their diets, to the general population who generally are not at all concerned about their health and eat lots of McDonald's. A better comparison would be between vegetarians who consume SOME animal products and Vegans who consume NO animal products. Guess what? There is no detectable difference in health advantages when the two are compared.I'm not vegan/vegetarian myself but I don't believe the arguments that humans are "meant" to eat meat. Vegetarians/vegans as a whole are healthier, have lower rates of obesity/heart disease, and have a longer life expectancy.
IOW, one need NOT totally deprive one's self of animal products in order to reap all the health benefits of Vegan diets. By all but avoiding fast foods rich in animal products, reducing but not eliminating the intake of red meats, selecting better preparation methods (broiled vs. fried), eating more vegetables and grains, and pursuing a variety of foods, you can virtually eliminate the health risks associated with EXCESSIVE consumption of animal products and too little plant sources.
It WAS the decision they made, DE FACTO, whether they knew this was the choice they were making is irrelevant.Looks like your logic is pretty screwed up. Your wording would present it as if they were presented with a choice between eating meat/diary/taking supplements and damaging their kid. When in fact this was not the decision they made.