Is Caster Semenya walking away?

Olympic runner, Caster Semenya, must now use drugs to lower her testosterone if she's to compete again. Dr Tlaleng Mofokeng unpacks the story. Courtesy #DStv403

JOHANNESBURG - Olympic champion Caster Semenya has given a glimpse into her current state of mind.

She's taken to social media to comment on Wednesday's Court of Arbitration for Sports' verdict against her

Her bid to challenge new rules on testosterone levels for female athletes was rejected.

READ: Semenya loses battle over new testosterone rule

Semenya's yet to reveal whether she'll officially appeal the matter. 

On Thursday, she posted a message on Twitter, which may suggest she's thinking of walking away.