Rahul Potluri is a British physician, researcher and founder of ACALM (Algorithm for Comorbidites, Associations, Length of stay and Mortality) Study Unit, United Kingdom (UK). His clinical epidemiology research unit is one of the first to use big data in healthcare and medical research. His work has shown for the first time a link between high cholesterol and breast cancer. Further research has suggested the role of cholesterol and possibly statins improving the mortality in patients with breast cancer, lung cancer, prostate cancer and bowel cancer. Other prominent studies include health services research evaluating differences in death rates from weekend admission and discharge from UK hospitals, ethnic variations and the interplay between cardiovascular disease and mental health.