Discussion of case-control studies of Peleg, Stähelin, and Willett.
The combined results from the case-control studies of Peleg, Stähelin, and Willett were found to provide no evidence of a relationship between serum retinol levels and the risk of cancer in all sites combined or of lung cancer. However, a relationship between serum retinol levels and the risk of gastrointestinal cancer was suggested.
D005770:Gastrointestinal Neoplasms / Q000209:etiology; D006801:Humans; D008175:Lung Neoplasms / Q000209:etiology; D009369:Neoplasms / Q000209:etiology*; D012306:Risk; D014801:Vitamin A / Q000097:blood*
D014801:Vitamin A