Using data from two long-term studies of women and men, researchers found a potential link between citrus consumption and malignant melanoma of the skin. But the study did not test whether citrus fruits were the cause of the skin cancers, and more work will be needed to confirm the connection, the authors write in the Journal of Clinical Oncology. The results, from a single “observational” study that may not reflect the whole U.S. population, sho…