I am technically a selective/delayed vaxxer, DS is 12 months old and has not had anything yet, I'm not anti vax, I just believe the current schedule is too much too soon for young babies (30 scheduled vaccines in the current schedule by 18 months old!)
This pretty much mirrors how my DH and I are approaching our son's vaccinations. We have undertaken the first few at 3,5 and 6 months as there was a huge whooping cough epidemic going on at the time and people at work had it but will be delaying the MMR et al (not due to 'causing autism' reasons - I accept that this link was manufactured). We have arrived at this decision based on medical opinion as well as information we have gleaned ourselves (not off the internet). I, too, am a big believer in nutrition and how giving the wrong foods or too much of a food can have consequences.
What concerns me is that, similar to what sweetseven has said, there is a lot of confusing anti-vax information out there which is not accurate and feeds on fear. I've met several people who give me their group immunity theories and it frightens me how they just adopt something they know very little about, does not apply in their situation but sounds good to them so they go with it. It is for this reason that DH and I made it a point to speak to many professionals who gave us their qualified opinions on vaccination of children.
As an aside, my family GP is against this but my antenatal GP is totally for it.