University of Washington Researchers Identify 61 GLP-1 Drug Effects as 1 in 8 Americans Take Them
Updated
Updated · BBC Science Focus · Jul 12
University of Washington Researchers Identify 61 GLP-1 Drug Effects as 1 in 8 Americans Take Them
3 articles · Updated · BBC Science Focus · Jul 12
Summary
A University of Washington review found 61 distinct effects linked to GLP-1 drugs, with most appearing beneficial but 19 tied to higher risks such as nausea, gastroparesis, hypotension and osteoarthritis.
The breadth of findings suggests the medicines act far beyond weight loss, either because treating obesity lowers multiple connected risks or because GLP-1 receptors throughout the body let the drugs affect many organs directly.
Clinical signals span heart, kidney, liver, brain and addiction-related outcomes, while concerns include gastrointestinal complications, muscle and bone loss, and rare vision problems including sudden visual loss linked to semaglutide.
Use is expanding rapidly: Medicaid GLP-1 prescriptions rose sevenfold from 2019 to 2024, while spending climbed from about $1 billion to nearly $9 billion, intensifying supply strains and black-market risks.
Researchers and pharmacists say the drugs remain transformative for many patients, but their widening use demands medical supervision as evidence on long-term benefits, harms and mechanisms is still evolving.
GLP-1s may protect the brain from dementia, but are they creating a generation of frail bodies?
With benefits vanishing post-treatment, are new oral drugs the key to permanent weight control after Ozempic?
Beyond Weight Loss: The Expanding Health, Social, and Policy Impacts of Widespread GLP-1 Use
Overview
A landmark study led by Prof. Ziyad Al-Aly at the University of Washington in 2026 advanced our understanding of GLP-1 receptor agonists by systematically mapping their widespread effects across the human body. The research found that most effects of GLP-1 medications were positive, highlighting their potential to address a diverse range of health conditions. The study identified numerous beneficial impacts across various organ systems, including cardiovascular, liver, and kidney health. These findings suggest that GLP-1 drugs could play a broad protective role in human health, moving beyond their traditional use in diabetes and weight management.