Late June brought news that the animated shows “The Simpsons,” “Family Guy,” “Big Mouth” and “Central Park” would recast characters of color who have been played by white actors.

A week later “Hamilton” dominated the cultural chatter on Independence Day weekend when Disney+ premiered the film version of the Broadway phenomenon.

In both situations performers inhabited characters of racial backgrounds that were different from their own, often referred to as “colorblind casting.” But one provoked the usual apologies and promises to do better while the other was celebrated anew as being a bold exemplar of diversity — though it ultimately presents a set of more complex concerns.

The condition, which is distinct from a heart attack, goes by several names, including stress cardiomyopathy or takotsubo syndrome. It occurs when a part of the heart becomes enlarged and is unable to pump blood effectively. Unlike a heart attack, which is caused by clogged arteries, broken heart syndrome is preceded by intense emotional or physical stress.

“The increase in socioeconomic and psychological stress from the pandemic has literally increased stress cardiomyopathy,” Dr. Ankur Kalra, one of the study’s co-authors and an interventional cardiologist in the section of Invasive and Interventional Cardiology at the Cleveland Clinic, said.