When I switched from being Vegetarian to Vegan I noticed an immediate improvement in my health. I quit milk first and didn't feel any improvement but when I went the whole way - no eggs, butter or cheese I felt a lot better - healthy skin, less tired. I miss salty butter on my toast and Comte and Normantahl cheese but I can't go back having made the decision. If you can afford it, go organic as much as possible. As others have said, there is so much stuff in our food that shouldn't be there, who knows what detrimental effect it will have a little down the line. Also sans OGM - buy nothing that is GM. That stuff should carry a skull and cross bones on the label.