>>75725424unironically its because of stress and the sedentary lifestyle, once you are older you can't just sit on you ass over 8 hours like in school otherwise the acid in your stomach begins to go places, add that most of them have a really unhealthy lifestyle like barely sleeping and chugging energy drinks. At that point they are just asking for a scare.
See how people like Botan (Who already had her scare) always advocates for a healthier lifestyle even if it pains her that can't do everything she wants to do.