The GiveWell Blog

Tackling Diarrheal Disease in the Democratic Republic of the Congo (DRC) and South Sudan

| by GiveWell Staff

Diarrhea is one of the leading causes of death for children under five, killing more than 400,000 children every year. GiveWell has funded several programs to prevent and treat diarrhea, and we recently expanded our work by making a grant to support the implementation and evaluation of WASHmobile in the Democratic Republic of the Congo (DRC) and South Sudan. The program, which was developed by Johns Hopkins University, delivers water treatment supplies and hygiene messaging to households at the highest risk of diarrheal disease. It has shown promising results in randomized controlled trials (RCTs) but hasn’t yet been implemented at scale in the challenging settings where the need is greatest.

In this episode, GiveWell co-founder and CEO Elie Hassenfeld speaks with Senior Program Officer Erin Crossett, who leads GiveWell’s water research subteam, about the grant. They discuss how the program works, what prior research tells us about its potential, the significant uncertainties involved, and what GiveWell expects to learn.

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Scaling Our Impact, With Support From a $1 Billion Commitment

| by GiveWell Staff

This year, we are focused on two primary goals. The first is to rapidly scale our research capabilities so we’re able to move much more donor funding to highly cost-effective programs in the near future. The second is to find and fund as many of the best opportunities we can this year to save and improve lives.

In 2025, we committed $418 million in grants. Though we’re just halfway through the year, we’ve already committed over $400 million in 2026. We anticipate our total grantmaking is likely to approach or even exceed $1 billion this year, and we are working toward a future that could be several times that scale.

We’re excited to share another major step in that direction. Coefficient Giving has decided to increase its near-term funding commitment for GiveWell grants to $1 billion in support of our continued scaling.

This commitment is both extraordinary and timely. Near-term needs continue to far surpass our fundraising expectations, and we are actively working to raise more funds to support a growing set of cost-effective opportunities to help people in need.

What’s driving our increased grantmaking

Several factors have driven our current expansion, as well as our ability to continue scaling.

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Casting a Wider Net for Cost-Effective Programs

(updated on: ) | by GiveWell Staff

GiveWell tends to be known for its work in areas like malaria prevention, water treatment, and nutrition. But as our research team has grown, so has our ability to search for cost-effective programs across a much wider range of issues.

Serious health problems, such as lack of medical oxygen and stockouts of essential medicines at health facilities, affect millions of people in low-income countries. There may be highly cost-effective solutions to these problems that haven’t been thoroughly evaluated or adequately funded. One of the ways GiveWell is searching for these solutions is through the new areas research subteam, which is responsible for investigating programs in cause areas GiveWell hasn’t historically focused on.

In this episode, GiveWell co-founder and CEO Elie Hassenfeld speaks with Senior Program Officer Dan Brown about GiveWell’s new areas research subteam and three grants that illustrate the team’s work.

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June 2026 updates

| by Chandler Brotak

Every month we send an email newsletter to our supporters sharing recent updates from our work. We publish selected portions of the newsletter on our blog to make this news more accessible to people who visit our website. For key updates from the latest installment, please see below!

If you’d like to receive the complete newsletter in your inbox each month, you can subscribe here.

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Looking Back to Give Better: A Webinar Recap

(updated on: ) | by GiveWell Staff

GiveWell’s latest webinar took a close look at a critical step in our research process: how we’re working to evaluate past grants to understand what happened, why, and how we can use what we learn to improve our grantmaking over time.

Our research spans the full lifecycle of grants. Before we approve funding for a grant, our research team reviews academic evidence, builds cost-effectiveness models, and consults with experts to estimate the program’s expected impact. When programs near the end of their funding, we investigate whether a grant achieved the impact we initially projected. In 2025, our growing research capacity enabled us to expand this final step for select grants and publish comprehensive evaluations that we call “lookbacks.”

During the webinar, GiveWell co-founder and CEO Elie Hassenfeld moderated a discussion with Program Directors Alex Cohen and Julie Faller and Senior Program Officer Adam Salisbury. They covered four examples of grant lookbacks—discussing what we’ve learned and how these lessons are informing our work—and answered questions from the audience live.

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Expanding Our Search for Cost-Effective Ways to Reduce Poverty

| by GiveWell Staff

In September 2025, we created a livelihoods research subteam to specifically focus on programs that increase the economic well-being of people in extreme poverty. While we have evaluated and funded livelihoods programs throughout GiveWell’s history, we now have a dedicated program officer overseeing this portfolio, which has allowed us to build on and deepen that work.

Historically, GiveWell has predominantly focused on health-related programs. Diseases like malaria, diarrhea, and pneumonia can be prevented fairly cheaply, and the evidence for health programs is often strong relative to other areas. As our research team has grown, we’ve been building capacity to explore programs that increase people’s incomes, where the long-term impact is often more challenging to measure and effectiveness differs from context to context.

In this episode, GiveWell co-founder and CEO Elie Hassenfeld speaks with Senior Program Officer Adam Salisbury about GiveWell’s expanding work on livelihoods programs, which programs might be the most cost-effective, and research we’re funding to help answer some key questions.

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