The sport of MMA attracts a growing number of fans and hobbyist by the day, but what many aren’t aware is that mixed martial arts come with some startling consequences.

Renato Sobral has competed as a mixed martial arts fighter for 16 years. Babalu fought against noteworthy names like Fedor Emelianenko, Mauricio Rua, Dan Henderson, Gegard Mousasi, Robbie Lawler, Chuck Liddell and Chael Sonnen prior to retiring in 2013.

Sobral says he has symptoms of chronic traumatic encephalopathy (CTE). He told Brazilian outlet PVT:

”What happened to me was something that came in homeopathic doses,” Sobral said. “Today a fighter learns how to fight, he learns how to make money, but he doesn’t learn too much about how to manage his life. I didn’t learn how to manage my life. I made several mistakes about money, about what I could have done with my career. I paid a price for being where I am.

”Today I can’t walk a straight line, I lost sight of my left eye, which is a big price (to pay). I have no balance today, my balance is almost zero. When I’m fighting, when I’m in a jiu-jitsu tournament or in training, it feels that my balance is normal again, but it’s complicated on a daily basis. But the guys that start fighting have to know that the price to pay will come one day. For everyone. People only talk about the good things today, what they have accomplished, what happened, but what about what you’ve lost? What happened to you?

”If someone asked me if I would let my son fight vale tudo, I would say no, I wouldn’t. My daughter? No. I would hope she wouldn’t. I’d rather see her study. My daughter already is on the water polo ‘A’ team of her high school, she competes, but being a professional athlete? Any sport demands a lot from your body and you will have to pay the price in the future.”