Actually, social problems don't hit until 18-23 years of age for males; same thing with psychological problems. Usually, sleeplessness, obsession, schizophrenia, manic depression, social anxiety, and many other psychological issues spike at around 20, unless dealt with early. You can't fix a problem that you don't realize you have. :3
Oddly enough, the same psychological and social disorders don't spike until 30-45 years of age in females.