Illustration: Sam Jayne / Axios

One in five American young adults under the age of 25 lives with a mental illness or behavioral disorder, NBC reports, citing the Centers for Disease Control and Prevention.

The big picture: Per the CDC's research, the state of young adult mental health in the U.S. is only worsening, with the suicide rate among teenage girls reaching a 40-year high in 2015. Here's a look at the numbers that tell the story of this crisis.

The numbers:

  • 15 million, or 1 in 5, American children and young adults battle mental illnesses or learning disorders.
  • 10 million, or two-thirds of them, are undiagnosed or aren't receiving treatment.
  • Among children ages 3 to 17: 6.8% are diagnosed with ADHD, 3.0% suffer from anxiety, 2.1% suffer from depression

Go deeper

Pundits react to a chaotic debate: “What a dark event we just witnessed”

The first presidential debate between President Trump and Joe Biden in Cleveland on Tuesday night was a shouting match, punctuated by interruptions and hallmarked by name-calling.

Why it matters: If Trump aimed to make the debate as chaotic as possible with a torrent of disruptions, he succeeded. Pundits struggled to make sense of what they saw, and it's tough to imagine that the American people were able to either.

Trump to far-right Proud Boys: "Stand back and stand by"

Asked to condemn white supremacist violence at the first presidential debate on Tuesday, President Trump said the far-right Proud Boys group should "stand back and stand by," before immediately arguing that violence in the U.S. "is not a right-wing problem. This is a left-wing problem."

Why it matters: Trump has repeatedly been accused of failing to condemn white nationalism and right-wing violence, despite the FBI's assessment that it's the most significant domestic terrorism threat that the country faces. The president has frequently associated antifa and the left-wing violence that has afflicted some U.S. cities with Biden, despite his condemnation of violent protests.

Mike Allen, author of AM
1 hour ago - Politics & Policy

The first Trump v. Biden presidential debate was a hot mess

Photos: Jim Watson and Saul Loeb/AFP via Getty Images

This debate was like the country: Everybody’s talking. Nobody’s listening. Nothing is learned. It’s a mess.

  • We were told President Trump would be savage. Turned out, that was a gross understatement. Even the moderator, Fox News' Chris Wallace, got bulldozed.

Why it matters: Honestly, who the hell knows?