Joe Thomas believes he is already suffering from memory loss at the age of 32.
"I definitely expect memory loss," Thomas said on "In Depth With Graham Bensinger." "I'm already seeing memory loss, and maybe that's just because of my old age or maybe it's football, it's hard to tell.
"I mean, there's no double-blind studies when it comes to people's life. It's just a part, I think, of sometimes getting older. And it's hard to tell it's because of football or because you're 32 and you're not 21 anymore and you have a lot of stuff going in your life."
Thomas was asked to describe the type of memory loss.
"Short-term memory loss -- hard times remembering things that have happened recently," he said. "Like, you walk to the grocery store and you're like, 'Huh, I can't remember what I needed to get.'
"Just little stuff like that, and I think if you let it really bug you, I think it can make you depressed and feel sad. Like, 'Wow, I don't have the memory I used to have.' But, you know, I try to be relatively good-natured about it at this point."
Thomas is entering his 11th season with the Browns.