The study included patients aged 60-88 years with a clinic follow-up of at least 1 year and no diagnosis of AD or skin cancer at the beginning of the study.
‘Diagnosis of malignant melanoma (skin cancer) was associated with a 61% reduced risk of developing Alzheimer’s disease.’
Of 1147 patients who were later diagnosed with malignant melanoma, 5 were diagnosed with subsequent AD. Of 2506 who were diagnosed with basal cell cancer, 5 had a subsequent AD diagnosis, and of 967 who were diagnosed with squamous cell cancer, only 1 had a subsequent AD diagnosis.
For basal cell and squamous cell carcinomas, the reduced risks were 82% and 92%, respectively.