By Dr. Brian McDonough, Medical Editor

PHILADELPHIA (CBS) – There is a disturbing report looking at a major issue for people who battle with weight issues.

Research out of Yale University finds that although overweight and obese adolescents are most often bullied by friends and peers, a significant numbers of them are also bullied by adults. Perhaps most disturbing is that it often happens in the educational setting.

Forty-two percent of those who had experienced weight-based bullying reported that it had been done by a physical education teacher or sports coach and 27 percent reported bullying by a teacher.

Overall, considering bullying from all sources, verbal teasing was the most common form of bullying, although social isolation, ‘cyber bullying,’ and physical violence were also common.

Another disconcerting fact is that 37 percent say they were bullied by a parent.

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