Things I read on the Internet and I desperately what to know if they're true

1. You constantly see your nose but your brain chooses to ignore it
2. When you cry, the first tear comes from your right eye if it's happiness, from the left eye if it's sorrow
3. There are at least 6 people in the world that look exactly like you
4. 80% of families did not buy or read a book in the last year
5. When you blush, your stomach blushes too.  (How would they know this?)
6. There are only 700 wild mountain gorillas
7. You can break your iris
8. You have neutrinos in your body from the beginning of the universe
9. Honey will stay fresh for over 3,000 years
10. Cheese is the most shoplifted food

really?