"When the mind senses a potentially harmful situation, it tells the body to prepare by increasing its heart rate, breathing, and blood pressure. This response helped earlier humans outrun or fight predators and enemies. Today’s stressful situations, more likely a challenging interaction at work or a misbehaving child, result in the same physical reactions even though we are less likely to experience physical danger. The problem is, when this stress response is repeated frequently over time, evidence shows it leads to health problems including depression, anxiety, insomnia, heart disease, skin rashes, and gastrointestinal problems—just to name a few. Now a growing body of evidence demonstrates that racial discrimination triggers this stress response. As a result, racial minorities may experience more health problems compared to others. One review of 121 studies published in 2013 found that youth between the ages of 12 and 18 who experienced discrimination were significantly more likely to experience mental health problems such as depression and anxiety compared to those who did not experience discrimination. Another review of 66 studies found that black American adults who perceived they were subjected to racism were more likely to experience mental health problems and more likely to report a lower quality of life."