Taller people have a greater risk of cancer because they are bigger and so have more cells in their bodies in which dangerous mutations can occur, new research has suggested, with a 13% increased risk for women for every additional 10cm, and an 11% predicted increase in men for every 10cm.
Source: https://www.theguardian.com/science/2018/oct/24/tall-people-at-greater-risk-of-cancer-because-they-have-more-cells