In an episode to coincide with The BMJ's themes issue on racism in medicine, this week we talk people getting your name wrong, other microaggressions, and how racism can literally break your heart. We also hear from Professor David Williams on the physiological impact of discrimination and being a person with prejudices. You can hear David's full interview in The BMJ podcast. This week's expert contributor: David Williams is a Professor of Public Health at the Harvard School of Public Health, as well as a Professor of African and African American Studies and of Sociology at Harvard University.

His research has focussed on the health effects of racial discrimination, as well as the public health implications of marginalisation.