Sodium nitrate is a type of salt used to preserve foods, particularly cured meat. It's added to cured meat to extend its shelf life by preventing rancidity and the growth of bacteria. The U.S. Environmental Protection Agency has set a legal limit for the concentration of nitrate allowed in food.
The 12-year process of becoming a dermatologist requires a significant commitment of the student's physical, mental, emotional and financial resources. It's only natural to wonder how large a reward waits at the end of this long road.
But i can honestly say it takes up to 10 years or so. You will have to complete a Bachelor degree--Biology, Bio-Chemistry or Bio-Physics would make the most sense. Then you will have to take the MCAT and score well to get into med school. So far your looking at 8 years. After med school you will be a doc but you have to do a residency this is 2-3 years and then you have to specialize in dermatology. So bet on about 12 years at least before the paychecks start rolling in. I know that it takes a very long time and some may think it isn't worth the time,money and hard work.