What can you say about this?

A vegetarian diet can indeed be very healthy. However, a LOT people who decide to "go veggie" are woefully under-educated as to how to actually be healthy about it. So many, especially younger people, seem to think that eating nothing but salads and various other veggies prepared in different ways, with a little grain thrown in for good measure is a perfectly healthy diet. They frequently overlook the need for protein. In many cases, the diet that people adopt when they suddenly decide to be vegetarians, ends up giving them too much of one nutrient and not enough of another. Which would explain why I've rarely seen a truly healthy looking vegetarian (or vegan, for that matter). I'm not saying that people shouldn't ever decide to become vegetarian. I'm saying that before making the switch, they should educate themselves. Buy a few cookbooks, get a guide to the nutritional content of various foods, talk to their doctor about what nutrients they need and in what quantities, etc.

A vegetarian diet is as healthy as a diet containing meat provided the person is not a vegan. A vegan is a person who never takes even milk or any other milk product. Now that is disasterous. The reason is all the vitamins are available except Vitamin B12. B12 deficiency can cause megaloblastic anemia. So there is no harm in becoming a vegeterian but take milk products that can replenish that can provide B12. Nutritional supplement or capsule containing B12 can help but I think it beats the purpose of being vegeterian. So say yes to milk.