While that food doesn't look healthy I don't think it would be enough to become obese alone from a calorie perspective, unless portion sizes are massive (you sa

While that food doesn't look healthy I don't think it would be enough to become obese alone from a calorie perspective, unless portion sizes are massive (you said one sandwich but maybe it was multiple?). Especially with a teenage metabolism. Snacks, desserts, and sugar drinks in between meals are a huge contributor for a lot of people.