Longtime 'Shark Tank' star Daymond John diagnosed with thyroid cancer

Daymond John, CEO of FUBU and longtime "Shark Tank" star, revealed during a sit-down interview with "Good Morning America" on Wednesday that he was diagnosed cancer of the thyroid and has received treatment for it.

Doctors removed a cancerous mass from this thyroid, which they discovered after an extensive physical.

"They removed it and it was stage 2 cancer on my thyroid ... I didn't skip a beat. I got some early detection and I understood that I had a challenge and if I attack it now, then I wouldn't let it attack me," he told Robin Roberts. "I had that removed. I didn't miss anything, I was out partying and dancing two days later -- not that I should of."

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Shark Tank, Daymond John
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Shark Tank, Daymond John
PASADENA, CA - JANUARY 10: Daymond John of 'Shark Tank' speaks onstage during the ABC portion of the 2013 Winter TCA Tour at Langham Hotel on January 10, 2013 in Pasadena, California. (Photo by Frederick M. Brown/Getty Images)
PASADENA, CA - JANUARY 10: (L-R) Hosts Robert Herjavec, Lori Greiner, Daymond John, Kevin O'Leary and Executive Producer Clay Newbill of 'Shark Tank' speak onstage during the ABC portion of the 2013 Winter TCA Tour at Langham Hotel on January 10, 2013 in Pasadena, California. (Photo by Frederick M. Brown/Getty Images)
PASADENA, CA - JANUARY 10: (L-R) Hosts Robert Herjavec, Lori Greiner and Daymond John of 'Shark Tank' speak onstage during the ABC portion of the 2013 Winter TCA Tour at Langham Hotel on January 10, 2013 in Pasadena, California. (Photo by Frederick M. Brown/Getty Images)
LOS ANGELES, CA - NOVEMBER 23: Businessmen/'Shark Tank' cast members Mark Cuban, Daymond John, Robert Herjavec, and Kevin O'Leary speak onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California. (Photo by Kevin Winter/Getty Images)
MIAMI BEACH, FL - JANUARY 20: Daymond John attends NATPE Reality: Case Study: SHARK TANK at NATPE 2015 at Fontainebleau Miami Beach on January 20, 2015 in Miami Beach, Florida. (Photo by Aaron Davidson/Getty Images)
Daymond John, chief executive officer & founder of FUBU, takes part in the Yahoo Finance All Markets Summit in New York, U.S., February 8, 2017. REUTERS/Lucas Jackson
20/20 - David Muir and Elizabeth Vargas interview the cast of ABC's 'Shark Tank,' airing on a special edition of '20/20,' Friday, February 24, 2017 on the ABC Television Network. (Photo by Jeff Neira/ABC via Getty Images) MARK CUBAN, DAYMOND JOHN, KEVIN O'LEARY, BARBARA CORCORAN, ROBERT HERJAVEC
THE VIEW - Senator Kirsten Gillibrand (NY) is the guest, Monday, May 8, 2017 on ABC's 'The View.' 'The View' airs Monday-Friday (11:00 am-12:00 pm, ET) on the ABC Television Network. (Photo by Lou Rocco/ABC via Getty Images) WHOOPI GOLDBERG, BARBARA CORCORAN, DAYMOND JOHN, SARA HAINES
NEW YORK, NY - MAY 08: Daymond John attends Mogul: Celebrating The Life Of Chris Lighty at Marquee on May 8, 2017 in New York City. (Photo by Johnny Nunez/WireImage)
HOLLYWOOD, CA - DECEMBER 10: CEO of FUBU Daymond John arrives at the premiere of Walt Disney Pictures and Lucasfilm's 'Rogue One: A Star Wars Story' at the Pantages Theatre on December 10, 2016 in Hollywood, California. (Photo by David Livingston/Getty Images)
NEW YORK, NY - NOVEMBER 18: (L-R) J. Alexander Martin and Daymond John attend Fabolous' A Night In FABU DHABI Birthday Celebration on November 18, 2016 in New York City. (Photo by Johnny Nunez/Getty Images)
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The 48-year-old businessman stressed the importance of early detection, which is a huge reason why he's sharing his story with the world.

"But I wanted to share this information with people, because what would I have went through if I decided to just stick my head in the sand and go, 'You know what, I'm not going to check into stuff. If it happens it happens to everybody else,'" John said.

And while the situation could have been significantly worse, even life-threatening, it was his decision to act quickly that saved his life. Now, John is "absolutely great," although he'll have to have routine checkups to see if the cancer has returned for the rest of his life.

"I have another half of my thyroid still in. In the event it comes back I will have to fight it," he revealed.

John, 48, is the CEO of the famed FUBU corporation and an investor on the hit ABC show, which he's starred on since 2009.

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Common foods suspected of causing cancer
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Common foods suspected of causing cancer

Microwave popcorn

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Soda

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Non-organic fruit

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Processed meats

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Alcohol

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Farmed salmon

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Refined sugars

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Canned tomatoes 

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Potato chips

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Hydrogenated oils

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Artificial sweeteners

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Foods that are highly salted, pickled, or smoked

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Red meat

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Highly processed white flours

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"Diet" or "Low Fat" anything

(Photo by Nancy Stone/Chicago Tribune/MCT via Getty Images)

Genetically modified organisms (GMO's)

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