The Cincinnati Bengals superstar's comments come as the topic of concussions has returned to the spotlight this season ... after the Dolphins allowed their star QB to play in a game just four days after he appeared to suffer a serious head injury against the Bills.

Burrow says, unfortunately, these things will continue to happen due to the nature of the sport ... and players know what they're signing up for.

"You're going to have head injuries," Burrow said on Colin Cowherd's podcast. "You're going to tear your ACL. You're going to break your arm. That's the game that we play. That's the life that we live."

Burrow -- who said he's had concussions where he didn't remember the second half of a game or an entire game -- said there's an inherent risk associated with the sport that he accepts.

"I know I got a little dizzy at one point," Burrow said on the podcast. "But nothing long-lasting."

Tua's situation has sparked serious concern with the Dolphins' handling of concussions ... with many questioning why he was even on the field to get hit in the head again on Thursday after suffering what looked like a possible head injury just four days prior against the Bills.

Tagovailoa's situation was so serious, Dr. Bennet Omalu -- the famed neurologist portrayed by actor Will Smith in the 2015 movie "Concussion" -- told us Tua should walk away from the NFL.

"If you love your life, if you love your family, you love your kids -- if you have kids -- it's time to gallantly walk away," Omalu said. "Go find something else to do."

"Sometimes money is not more valuable than human life. $20 billion is not worth more than your brain."