Simone Biles opens up on taking anti-anxiety medication

The Olympic superstar has also landed the coveted spot on ESPN The Magazine's year-end issue.
4:26 | 12/11/18

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Transcript for Simone Biles opens up on taking anti-anxiety medication
I'm here now with olympic megastar Simone Biles. Just 21, she's been called one of the greatest gymnast of all time and won four gold medals in Rio and recently became the first female gymnast to win four world championships. Now she's a the coveted spot on ESPN the magazine blockbuster year. We're going to reveal it now for the very first time. Can I get a drum roll from the audience? Let's look at it right here. Come on, bring it. There it is. Look at her. Man. You know how to strike a pose. Thank you. Okay, these are the most dominant athletes of 2018, the 20 most dominant and you're number one. Yes. What was your reaction when it was revealed to you that you had top spot. I honestly didn't believe it. Like it didn't occur to me and I didn't think it was real. I was like, oh, am I 20th or am I top five and they're like, you're number one and I was line, you're joking. It looks like the photo shoot was fun. It was so much fun, so much fun. Yeah, you're just a natural. You're just so shy too. I can't believe this about you because when we see you in competition you seem so fearless. I mean I know we'll -- we're looking ahead to 2019 but for a moment can we look back? What is most memorable to you about the year. I feel like there were a lot of points in this year that made me who I am today and I feel stronger but I feel like this year gave me a voice and I try to find my voice this year and use that to the better potential in positive manners so it was a very good year. It was a great year and weep appreciate it. And, Simone, you talk about using your voice. You and the other brave women who stood up to what was happening to you and the way that you handled it with such grace, with such strength, how were you able to process it all? Yeah, it's definitely not easy. I have my ups and downs. I till go to therapy and I'm on anxiety medicine now because I had a lot of ups and downs throughout the year in trying to figure out what was wrong and so I go to therapy pretty regularly and it's not easy but the people surrounding me are some of the best so it makes it a little easier. Wonderful for to you admit that. You know, people don't do that enough. They don't -- that was very traumatic what you went through, bless you. Bless you for taking care of you like you're doing. Thank you. Know how I mentioned about the world games. She was battling some kidney stones at the time. Uh-huh. I mean, come on. What was going on? How did you do that. It was pretty hard. I had back pain for a couple of weeks a little bit leading up to world championships and one day my parents finally flew in to Qatar and I was like, mom, I can't walk. I think I need to go to the hospital and she's like, okay, that is strange because you are not a complainer. Cease's like, well, let's take you to the hospital and go eat dinner, wait, I don't want to go to the hospital and I ended up going and laying in a bed there and we did some tests and some ultrasoups and all these things and found out I had kidney stones and it was too big to pass, thank god, because I didn't want to pass it while we were there. So hoping to wait till we got back to the states and did and I got in and went to see the doctor and we're not sure if I still have calcium buildup or calcium spurs or whatnot so -- How are you feeling? I feel pretty good. Was supposed to go to the doctor yesterday but I'm here, so I postponed it. Yeah. Okay. Don't get your mom mad at me. Congratulations. You are a shining example of setting goals and going for it and hamming it with, again, with such grace, you and your teammates and we'll look for you in 2020 in Tokyo.

This transcript has been automatically generated and may not be 100% accurate.

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