[1913 Webster] I knew by these harbingers who were coming. --Landor. [1913 Webster] The Collaborative International Dictionary of English v.0.48:Harbinger \Harbin*ger\, v. t. [imp. & p. p. Harbingered (h[add]rb[i^]n*j[~e]rd); p. pr.
However, certain factors might put teens at risk of developing eating disorders, including: Societal pressure. Popular culture tends to place a premium on being thin. Even with a normal body weight, teens can easily develop the perception that they're fat. This can trigger an obsession with losing weight and dieting. Favorite activities. Participation in activities that value leanness â such as modeling and elite athletics â can increase the risk of teen eating disorders.
Teenagers: Vitamins & Mineral Needs. Adolescents need plenty of vitamins and minerals during their growth spurt. For girls, this generally occurs around 10 to 11 years of age, while for boys it occurs later, at around 12 to 13 years.