I am a vegetarian for 15 years, and never have any problem.
Cheese is made from milk and rennet. There are three types of rennet: plants, friendly bacteria, and cow's eye balls & stomach. Beware of the choice for the rennet. That's why I have to make sure that rennet does not come with the cheese.
Many cheese products have a rennet on the ingredients, I always check or ask someone what kind of rennet does it have. I don't buy dead animal in the cheese. A dead animal is dead animal, and it is really gross.
Again, if the rennet is for plants/friendly bacteria, then it is fine for me to buy either the cheese or raw cheese.
I love RAW cheese - it is the best because pasteurized homogenized cow's milk is not quite good because it eliminates many nutrients. Raw milk has many good nutrients in it. RAW cheeses do not harm you - nothing happens to me for 6 years.
Hmm. Blue cheese is so good. yum...
In a general idea of how to make a basic cheese, perhaps, you might like to know about it. Here is the link:
http://biology.clc.uc.edu/fankhauser...ese_course.htm
I forgot about vegan. It is very strict selection. I tried to be a vegan, and it was not possible for me. Vegetarian is a good way to loose your weight. Cottage cheese is fine, and it is not that bad. Indeed, all cheeses make you fat - not cottage cheese because it is less fat. That's unfortunate.
It NEVER good idea for you to buy a non-fat cheese or non-fat milk, diet sugar, or other type of diet because it contains aspartame which is true not healthy for anyone. You can find many list on Google how bad the aspartame is.
Regular food is fine as long as you know what are you doing with your "natural" diet. All you have to use your common sense to find the right food - no meat, no junk food, no more habit eating food, etc. Hopefully, no temptation at late night looking at the refrigerator.