Celebrity Big Brother's Louis Walsh opened up about his shock cancer diagnosis during lockdown on Friday's episode of the reality show.The TV judge, 71, admitted that the health scare gave him a 'reality check' and reminded him that he is in the 'real world' as he detailed how sick he was at the time.Thankfully, Louis told his other housemates that medics were able to "clear up" the cancer but back in the pandemic, he described how he was "sick" and the ordeal affected him mentally. It comes as the music mogul prepares to face the live eviction alongside Levi, Ekin-Su, Fern Britton and David Potts. Asked by his housemates how he fared when discussions turned to the pandemic, Louis announced his health scare which "nobody knew" about.