Two new global studies show the incidences of bowel cancer are increasing in those under age 50 causing health experts to call for younger people in australia to be screened for the disease. Health experts are calling for younger australians to be screened for bowel cancer after two new global studies reveal the disease is increasing in people under 50. Bowel cancer australia ceo julien wiggins told nine news1 in may this year that the starting age for bowel cancer screening should begin earlier which would lower the rates of the disease the second.