WTXF - A little boy is reminding everyone how important it is to get your heart checked.
It's Congenital Heart Defect Awareness week so young Cassius recorded a video with a very important message: "Everybody needs to get their heart checked."
His little brother, Caleb, was diagnosed with Tetralogy of Fallot (TOF), a rare condition caused by a combination of four heart defects.
"I'm Cassius, and I'm here to tell you about my brother's broken heart," he said in the video. "We went to the doctors so they can see my mom's belly. We found out then he had a broken heart."
The boys' mother, Jessica Cunningham, said the idea to record a video all started when Cassius said he wanted to tell his class about his little brother's heart.
"So, we started practicing. I pulled out the phone and started recording. I just thought it was so cute that I had to share it with all my friends," said Cunningham on Good Day Philadelphia Weekend.
Due to the rare heart condition, little Caleb's blood didn't have enough oxygen. He had open-heart surgery at 7 days old and now needs a second surgery to fix a pulmonary valve that is leaking.
"He will have the rare condition for the rest of his life," said Cassius. "But it is very important that I let you know that everybody needs to get their heart checked, and everybody needs to eat healthy, and don't smoke cigarettes."
Cunningham said, "This is CHD Awarness Week and it's really important that we let everybody know about how serious CHDs can be. Only one percent of every dollar that's donated to Children's charities goes to CHD, and CHD is the number one killer of children under 18."
The family has set up a GoFundMe page to help with Caleb's medical bills. Click here if you would like to donate.