GIRL’S HEALTH: Girls spend a lot of time worrying about their appearance rather than what is good or bad for them. However, many adolescent and preteen girls are at risk of developing potentially serious health problems. Some diseases, such as obesity and depression, can affect girls of any age. Other health issues, such as sexually transmitted diseases (STDs) and dating violence, are more common in older girls. Learn about the issues that girls face today and what you and your daughter can do about it.