Demi Lovato is challenging stigmas about mental illness as ambassador of the initiative Be Vocal: Speak Up for Mental Health. The singer made an appearance on MSNBC on Monday and spoke the issue on Capitol Hill on Tuesday.

The pop star, who has been an advocate for mental illness awareness since battling her own eating disorder and bipolar disorder, appeared on "NewsNation with Tamron Hall," reported E! Online.

The "Cool for the Summer" singer was not shy about shooting down criticism of people with mental illness, an increasing occurance, Hall pointed out, since the mass shooting at Umpqua Community College on Thursday.

"Well, unfortunately, we've had several instances where mental health has been brought to the attention by the media because of these tragedies," Lovato said. "I think it's really important to remember that actually mental health -- people with mental illness are actually more likely to inflict harm on themselves and become the victim rather than be the perpetrators."

During the segment, the 23-year-old went on to discuss her own personal history with mental illness and her efforts to get Congress to pay attention to the issues surrounding mental health.

On Tuesday, Lovato met with legislators on behalf of the Be Vocal: Speak Up for Mental Health initiative at the National Council for Behavioral Health's Hill Day in Washington, D.C.

She shared a photo on Instagram from her meeting with the National Council's president and CEO, Linda Rosenberg.

A photo posted by Demi Lovato (@ddlovato) on Oct 5, 2015 at 1:39pm PDT

Lovato used the opportunity to share her story and speak up for millions of people suffering with mental illness. She reiterated the need to treat mental illnesses like physical illness, since the brain is an organ and part of the body.

"I think it's important that people no longer look at mental illness as something taboo to talk about. It's something that's extremely common, one in five adults has a mental illness, so basically everyone is essentially connected to this problem and this epidemic," the singer said, according to People magazine.

The star also met with Sen. John Cornyn from her home state of Texas, who thanked the star on Twitter for her contribution to mental illness awareness.

Check out Lovato's appearance on "NewsNation with Tamron Hall" below.