Geography ties in with nutrition because all over the world different countries have different types of nutrition. Depending on what country you live in will determine weather you are healthy or not, etc. This is because it will be the common thing to go along with the nutrition that is used by your family/friends, etc. If you are having weight problems, both underweight or overweight it could be related to the nutrition thats considered normal in your country.  You can easily ajust your nutrition to a different countries if you are not happy with the food you're used to, and i will go into more detail on this in my later posts.