The telly watchdog has received 40 official complaints over the treatment of Deana Uppal from fellow housemates Scott Mason and Ashleigh Hughes.
Both Scott and Ashleigh were given official warnings by Big Brother, which aired on Thursday night, over their comments towards Deana.
The pair had poked fun at Deana's eating habits, with Scott linking it to Indian culture.
BB told them that the comments could be seen as "stereotyping and therefore potentially offensive."
Ofcom will decide whether or not the complaints warrant launching an investigation later this month.
The show is already facing two other investigations, following comments made by Conor towards Deana, and Caroline towards Adam.
Over 2,000 complained about the two separate incidents, which aired on highlight shows last month.
It's expected that the outcomes of those investigations will be published in the coming weeks.