mouth breathing causes facial deformity and also teeth deformity, there is no room for discussing it, it's well proved by science, however very few people know this and dentist and others take advantage of it for $$$
i dont agree with that, all foods are not toxic, vegetables, fruits etc are the opposing of toxic, and "we've got to eat something" sorry but thats a big fallacy, people dont need to eat milk nor cheese and eating it in moderation even though it causes bad health for some persons is not a wise thing to do (in fact its very stupid)
the common fallacy of "we have to eat everything" (i dont know exactly how it is in english but in spain is "hay que comer de todo") is not true, we have to eat all the necessary nutrients and nothing more, the source is not important as long as it gives you the neccessary and proper nutrient
Many fruits contain extrinsic acids that can etch away at tooth enamel.
Many fruits and berries evolved to be eaten by certain species and remain mildly toxic to others. Its why some fruits are considered to be better for us than others. Nature is selective.
Modern cultivation practices introduce pesticides to our diet, unless you can afford organic.
The fruit my parents ate is not the fruit we are exposed to now, fruits have been selectively modified to be larger and sweeter and contain far less nutrients and are less beneficial to our health.
The flesh of fruit around the seed is usually highly toxic, the plant doesn't want you to eat the seed it wants you to spit them out whole.
I don't consume dairy products am 95% raw vegan but will eat wild oily fish for the other 5%. I suffer from nose congestion.
I can see you are impassioned about your convictions, but like in all things there has to be a balance and a cross pollination of ideas, ethics and understanding.
I know what it's like when you are impassioned about something, i take the same stance about many issues, but i've learned that once you've presented your case you need to let people come to their own conclusions else you'll just push people away.
Out of curiosity, i know you're a nose breather, how do you cope with steep hills when running? Much of my training revolves around running hard uphill, i prefer that to speed workouts on the flats.