Twenty-seven percentage points. That’s how much more likely an unemployed woman was to land a job within a year and a half of starting a GLP-1, compared to a woman who wanted to start one but hadn’t yet.
For context, that’s a bigger swing than the gap in employment rates between college grads and people without a degree.
It’s a number that ought to make you stop scrolling. The study behind it comes from Rebecca Diamond, an economist at Harvard, and it’s been making the rounds this summer for good reason. Diamond didn’t set out to prove GLP-1s make you more employable. She set out to measure something economists have suspected for years but struggled to actually isolate. It’s known as the “female obesity penalty,” and it’s the idea that women carry a specific, measurable cost for their body size in ways that show up in hiring, dating, and how they’re treated in first impressions.
Weight loss drugs, it turns out, gave her an unusually clean way to test it.
An Unusually Clean Test
Using a large, long-running national survey, Diamond compared two groups of women:
- those who started taking a GLP-1 for weight loss
- a matched group of women who said they wanted to start one but hadn’t yet
Because both groups wanted the medication, the comparison stripped out a lot of the noise you’d normally worry about—this isn’t just “motivated people do better,” it’s “what changed once the weight actually came off.”
The Results, By the Numbers
And what changed was striking, but only in specific places. Women who weren’t employed when they started the medication saw their odds of landing a job jump by 27 points after about a year and a half. Single women saw an even bigger shift with a 29-point increase in the odds they’d get married or move in with a partner over that same window.
Here’s the Twist
This research highlights what many of us living in larger bodies have known all along, and that, of course, is that there’s a baked-in bias that affects all aspects of our lives. The study revealed that women who already had jobs didn’t see any of that boost from their weight loss. That means no jump in promotions, no increase in hours, and no bump in pay. If GLP-1s were boosting health, energy, or confidence in a way that made women better at their jobs, you’d expect to see some of that show up for women who were already employed too.
Instead, the entire effect showed up at the moments where someone was being judged for the first time, such as a job interview, a first date, or a new match. Once you’re already in the door, known and evaluated on your actual work, losing weight didn’t move the needle. It was walking through the door in the first place that got easier.
That’s the finding that’s landed hardest about this study. It’s not really a story about weight loss making women more capable. It’s a story about what happens at the moment a stranger is deciding whether to hire you, date you, or take a chance on you—and how much of that decision was apparently riding on body size rather than anything else about the person standing in front of them.
This study has not gone through peer review yet, and the author has been careful to say this isn’t proof of illegal discrimination. But the pattern of real change only at first-impression moments and nothing for people already known and evaluated is hard to explain any other way.
Who Gets to Benefit
There’s also another ugly wrinkle buried in the data. The women who actually started GLP-1s in this study tended to have higher household incomes than the ones who wanted to but hadn’t. A lot of them were paying hundreds of dollars a month out of pocket.
In other words, the GLP-1s open up doors that bias had shut. But the cost, which can range from $299 to $449 from Eli Lilly Direct for Zepbound (tirzepatide) depending on the dosage, can keep those doors firmly shut for some women.
In some cases, more affordable compounding pharmacies can fill that gap.
What This Actually Proves
None of this makes the underlying bias okay, and none of it means the fix is “everyone should be on a GLP-1.” This research puts a number on something a lot of women like me already knew from experience but could never quite prove. That is, the world treats you differently based on your body, in ways that have nothing to do with your resume or your character, and that this treatment shows up hardest right at the moment someone is deciding whether to give you a chance.
