‘Blind Side’ Author Says Michael Oher Sued Tuohy Family After Getting ‘Hit in the Head’ Playing Football

Michael Lewis, the author behind The Blind Side book that inspired the Oscar-winning film, is shedding light on what he believes sparked Michael Oher's lawsuit against the Tuohy family.

"What we’re watching is a change of behaviour," Lewis told The Guardian of Oher's filing. He said the Oher of today is different, in his opinion, than the person he got to know while writing 2006's The Blind Side: Evolution of a Game, which is based on the Tuohy family taking in Oher when he was a teen. The book was adapted into the 2009 film, starring Quinton Aaron as Oher alongside Sandra Bullock, Tim McGraw, Lily Collins and Kathy Bates.

"This is what happens to football players who get hit in the head: they run into problems with violence and aggression," Lewis continued in the interview published on Tuesday.

It appears Lewis is referencing a condition called chronic traumatic encephalopathy (known as CTE). According to the Alzheimer's Association, it's "a progressive and fatal brain disease associated with repeated traumatic brain injuries (TBIs), including concussions and repeated blows to the head."

Lewis alleged Oher possibly believed others would "get behind him if he makes these accusations."

The author stood by Sean and Leigh Anne Tuohy, challenging Oher's claims in the lawsuit that they made millions from The Blind Side film while he got nothing. Lewis said they received six figures at best, however, the author admitted that the couple's daughter is married to one of the film's investors.

Lewis also said he doesn't believe Oher would have been in the NFL if it weren't for the Tuohys.

In his lawsuit viewed by The Messenger, Oher alleged that the Tuohys tricked him into signing a document, which he thought was part of the adoption process. Ultimately, it was a conservatorship that made Leigh Anne and Sean legally authorized to make business deals in his name.

A Tennessee judge ended the conservatorship last month, stating that she was troubled by the agreement.