A syndrome described as "hurried child syndrome"—a combination of stress-related behaviors—may develop when a child's parents expect performance levels much above his or her mental, social, or emotional capacity. In essence, parents overbook their children's calendars, put pressure on them to succeed academically, and expect them to act and react like young adults. The current situation of trade is another factor. Many people that market to children today are aware that their parents no longer have complete control over what their children eat, wear, or engage in for entertainment. The consumerist economy is taking advantage of this reality, and it affects children. The following statistics serve as an example of the "hurried child syndrome": The suicide and homicide rates have increased by three times over the previous 20 years, childhood obesity has increased by half, and 15 to 25 percent of young children are "failing" kindergarten, according to recent research on the effects of rushed kid syndrome. In an effort to "manage" them better at home and at school, millions of children take drugs. According to recent data, 70% of virgin girls will not remain virgins by the time they reach maturity, and 40% of adolescent girls who engage in sexual activity will become pregnant by then. Addiction to drugs and alcohol is the main cause of death for young people today, but suicide rates are also rising. Every year, 5,000 teenagers take their own lives.