It's hard for people to get help for themselves because they are embarrassed or afraid. Many people are scared of being judged or getting rejected so they don't want to get help. If someone asks them if they need help, they might say yes but otherwise, they wouldn't ask unless they know that nothing would happen to them, but even then, they would rather not ask.
They may want to appear just as the way the bodies look in an advertisement. And if the bodies are unhealthy bodies in the advertisements then that would be a negative reaction to the advertisement.
Yes, there should be stricter regulations to qualify for social security disability so the government can save tax money for those who really need it.
Google it and you may find your answer