Health experts reveal the eight early warning signs of leukaemia you should NEVER ignore, as singer Halsey hints at her secret battle with disease

Singer Halsey, 29, revealed her health battle in an Instagram post. Leukaemia can be hard to spot because the tell-tale symptoms can often indicate other unrelated illnesses, experts say. Singer Halsey, 29, revealed her health battle in an Instagram post. Leukaemia can be hard to spot because the tell-tale symptoms can often indicate other unrelated illnesses, experts say.