Core argument: The largest magnitude change is in the marriage market.
BMI is flat before women start [GLP-1 treatment] and then falls (Figure 2, Panel A). All groups lose between 1.4 and 2.5 BMI points in the post period. These effects grow to between 2.7 and 4.2 BMI points at 1.5+ years after initiation. The largest magnitude change is in the marriage market. Women who are single when they start (Figure 2, Panel B) increase their probability of being married or living with a partner by 18.3 pp overall and 28.6pp (s.e. 7.1) at six or more quarters, building gradually as they lose weight. Partnered women’s relationships, by contrast, are stable. Their partnership probability barely moves (0.1 points, s.e. 1.8), and there is no excess relationship dissolution (0.0, s.e. 1.7). The marriage-market response is the making of new matches, not the breaking or remaking of old ones. In contrast, single women’s weight loss seems to dramatically affect first impressions of potential partners, leading to a large increase in marriage and cohabitation. This is consistent with prior work on the obesity penalty negatively affecting women in the marriage market. Figure 2, panels C and D show that women not employed at baseline move into work: their employment rate rises 13pp overall and 27pp after six or more quarters, and their weekly hours rise by nearly ten hours at the longer horizon.GLP-1–Induced Weight Loss and the Female Obesity Penalty
AI Summary. GLP-1-driven weight loss reduces the female obesity penalty in marriage markets, with single women gaining an 18% higher probability of partnering and previously unemployed women gaining a 27% higher employment rate after 1.5+ years of treatment.
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Women who began treatment with GLP-1 drugs when not currently married or partnered saw an increased probability of marriage or cohabitation of ~29pp after 6 quarters. Those not initially employed were 27pp more likely to be working after 6 quarters.
Takeaways by Macro Roundup® AI
- The largest magnitude change is in the marriage market.
- Women who are single when they start (Figure 2, Panel B) increase their probability of being married or living with.
- 1) at six or more quarters, building gradually as they lose weight.


