Canadian by a handful of generations, but before that mostly "purely" (ahem) English with some French and a little bit of Scottish and maybe Irish (that would account for all the red hair in our family?) too.
Not sure how useful this stuff is because it's so hard to really determine accurately and because for most people living in the US or Canada now it's so far removed from any lifestyle choices that might affect it.
On the breastfeeding note, I was breastfed a long time (my mom was a hippie ) - until I was 3, and I never had any infant formula. I had cow's milk as a toddler for a bit but my parents quickly discovered that I was allergic to it and I've never had it since. From all perspectives I had a very natural and very healthy childhood - and I still have IBS I have had mild stomach problems all my life (from colic as an infant) but it really "exploded" (lol, sorry) around age 19-20 for me, just a year or two ago now.