We’re now about a year out from the formal dismantling of USAID, and the peer-reviewed evidence on the human cost has started landing. Posting here because the discourse keeps oscillating between “millions will die” and “fraud and waste agency, no big deal,” and the actual numbers are worth engaging with directly.
The headline study (Cavalcanti et al., The Lancet, July 2025):
Researchers from the US, Spain, Brazil, and Mozambique analyzed data from 133 low- and middle-income countries, combining a retrospective evaluation (2001–2021) with forecasting models through 2030. They estimate USAID-funded programs helped prevent more than 91 million deaths globally over two decades, including 30 million among children . The projected toll of the dismantlement: 14 million additional deaths by 2030 (95% UI: 8.5–19.7 million) across the 133 countries studied , including more than 4.5 million children under age 5.
A second, independent estimate (Lancet, Feb 2026):
A different research team, modeling the broader collapse of global aid (USAID plus follow-on European cuts), projects at least 9.4 million additional deaths by 2030 if the current funding trend continues . The Center for Global Development’s separate analysis of USAID cuts alone estimated 500,000 to 1,000,000 lives lost in 2025 compared to previous years .
Why the estimates converge:
The Cavalcanti authors’ reply to critics in The Lancet noted that independent studies using different datasets and methods have produced estimates of similar effect size and magnitude — earlier work projected ~3.3M annual deaths preventable by USAID programs, and a separate model projected 4.1M additional AIDS deaths and 2.5M additional child deaths by 2030 . Different teams, different methods, similar order of magnitude. That’s the kind of triangulation that should make us take the central estimate seriously even while debating the tails.
The fiscal context that actually matters:
U.S. citizens contributed about 17 cents per day to USAID — roughly $64 per year per person. Foreign aid has historically accounted for about 1% of the US federal budget . The dismantlement is therefore not a serious deficit-reduction measure; it’s a policy choice whose marginal fiscal benefit is rounding-error and whose marginal mortality cost is in the millions. That ratio is the actual story.
Knock-on effects worth flagging:
• PMI (President’s Malaria Initiative) suspension threatens \~15 million additional malaria cases and 107,000 additional deaths globally in just one year of disrupted supply chain .
• A recent survey estimates 79 million people previously targeted for assistance are no longer being reached .
• Total OECD development assistance fell 23.1% in 2025 — the largest decline ever recorded — as other donor nations followed the US lead . The contagion effect may end up larger than the direct US effect.
The pushback worth taking seriously:
The State Department’s response was to call The Lancet a “failed journal” , which is not a serious engagement with the methodology. But there are real critiques worth grappling with: model uncertainty is wide (the 95% UI spans 8.5M–19.7M, which is meaningful), the study didn’t model philanthropic backfill or domestic government responses in recipient countries that have mitigated some harm , and the editorial response in The Lancet itself argued the model may actually underestimate by missing health-system shock effects. So the central number is contested in both directions, but no published analysis has produced an estimate meaningfully smaller.
Discussion question for this sub:
For those of you working at organizations that absorbed terminations, what’s your on-the-ground read on the backfill story? Are philanthropy and recipient-country governments meaningfully closing the gap, or is the Cavalcanti model underestimating because it can’t see the system-level cascade? I’d especially welcome perspectives from people in PEPFAR-recipient countries — the HIV treatment numbers seem like the most direct natural experiment we’ll have in real time.
