Retailers feature plus-size models. “Fat influencers” have seen success on social media. Doctor groups have framed obesity as a disease that goes beyond willpower.

But public attitudes about weight have become more negative, even though thin people make up the minority of the population, according to a recent study from Harvard University. People who are overweight or obese not only have emotional and physical difficulties after being bullied about their weight, but also suffer financial penalties. Research from the Rudd Center for Food Policy and Obesity at the University of Connecticut found heavier workers earn less than thinner employees, are less likely to get promoted, and are viewed as lacking discipline.