“…Epidemiological observations dating back over one hundred years suggest that incidence rates of some cancers may be lower in patients with schizophrenia [ 1 , 2 , 3 , 4 , 5 ]. Numerous studies have been conducted in the decades since then but have failed to reach a consensus; there are reports of increased, reduced, or no difference in incidence rates of most cancers in schizophrenia patients compared to the general population (see reviews [ 2 , 3 , 4 , 5 ] and epidemiology studies [ 5 , 6 , 7 , 8 , 9 , 10 , 11 ]). However, as many of the risk factors for cancer, including smoking, alcohol use, increased body weight, physical inactivity, and reduced access to medical care, are also found in schizophrenia populations, it is surprising that cancer incidence rates are not higher amongst these patients [ 4 , 6 , 12 , 13 , 14 , 15 , 16 , 17 ].…”