I just read this very interesting article about how we can become so obsessed with so-called "healthy eating" that we end up with the exact opposite outcome. I had never heard of orthorexia. Hopefully, no-one on this forum has, or will, become this obsessive.
http://www.self.com/life/health/2015/03/care-too-much-about-healthy-eating/
http://www.self.com/life/health/2015/03/care-too-much-about-healthy-eating/