IT IS VERY IMPORTANT THAT YOU NOTE THAT the Food and Nutrition Board of the Institute of Medicine recommends an Adequate Intake (AI) of choline for men at 550 mg/day and 425mg per day for women.   Now for a growing adolescent, you most certainly need choline for your growth, so don't cut back too much because you don’t want to stunt your growth.  I really don't think you'll have a problem with eating too little amount of choline because you like your Big Macs and fries...he,he,he.  FYI, my son's odor gets bad with fast food hamburgers, but that doesn't mean it should be the same with you.