Unfortunately, there are many foods that cause acne in teenagers, but several of them are easy to avoid. To find more information on which foods your daughter should avoid, please go here http://www.diabetes.org/food-and-fitness/food/planning-meals/diabetes-food-pyramid.html
You should try to avoid sweet foods such as chocolate
You should avoid high calorie foods because they will make you gain weight. You should avoid acidic foods because they will give you indigestion.
Any foods that have a high sugar level content or junk foods are the foods that you should avoid. Have fresh fruit and vegetables every day to keep you , or concentrated in class, work etc.
Fat foods
fatty foods
Keep your skin clean, use plain products such as sorbolene for washing and moisturising. Note which foods seem to encourage acne and avoid them. Sometimes it might not be one food, but foods in combination. Stay as stress-free as possible.
Avoid eating salty foods, Foods that have lots of grease, and foods that are thick.
Foods low in saturated fat help to reduce acne, so stay away from fried foods.
There are foods you can eat that will cause you to have less acne. You should try changing your diet to foods that aren't greasy for the first step. acne.about.com/od/���acnetriggers/a/���dietacnestudy.htm
I am not sure which foods you should aviod with colitis. I have never known anyone who actually has colitis. You should contact your local doctor to avoid with colitis
avoid hard-to-digest foods such as nuts, corn, popcorn, and seeds