With careful attention to nutrition, dietary experts agree that a vegetarian diet can be a healthy lifestyle choice for teenagers

Yeah right. How many teenagers are going to be paying careful attention to nutrition with everything else going on in their lives? As an adult I fall short regularly, and I try hard (no I'm not a vegetarian). And teenagers have developing bodies, I don't.
I'm sorry, but I'm very skeptical.

Sure, vegan lifestyle isn't easy to endure, it require concentration, understanding and responsible approach to our food and most often cannot come at once, or even in "30 days". But when you start to notice your weight shedding, ability to do many long forgotten things, free breathing after taking stairs or fast walking, amongst others, you will look back with the relief of life saver (savior ), lollipop10.