Dr. David Eisenman and Kirsten Schwarz, both professors at the UCLA Fielding School of Public Health, study the public health impacts of extreme heat. Eisenman, a physician and professor in the department of community health sciences, studies extreme heat as a public health threat. Which common prescriptions and over-the-counter medications interfere with how our bodies handle extreme heat? When an extreme heat warning hits Los Angeles, what specific local challenges and hazards should Angelenos be looking out for? Eisenman: On any day with extreme heat, emergency rooms in Los Angeles see an additional 1,500 patients.