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The World Health Organization (WHO) emphasizes that there is currently no conclusive scientific evidence confirming a possible link between autism and use of acetaminophen (also known as paracetamol) during pregnancy. 

Globally, nearly 62 million people (1 in 127) have autism spectrum disorder, a diverse group of conditions related to development of the brain. Although awareness and diagnosis have improved in recent years, the exact causes of autism have not been established, and it is understood there are multiple factors that can be involved.  

Extensive research has been undertaken over the past decade, including large-scale studies, looking into links between acetaminophen use during pregnancy and autism. At this time, no consistent association has been established. 

WHO recommends that all women continue to follow advice of their doctors or health workers, who can help assess individual circumstances and recommend necessary medicines. Any medicine should be used with caution during pregnancy, especially in the first three months, and in line with advice from health professionals. 

Also, a robust, extensive evidence base exists showing childhood vaccines do not cause autism. Large, high-quality  studies from many countries have all reached the same conclusion. Original studies suggesting a link were flawed and have been discredited. Since 1999, independent experts advising WHO have repeatedly confirmed that vaccines—including those with thiomersal or aluminum—do not cause autism or other developmental disorders.   

Childhood vaccine schedules are developed through a careful, extensive and evidence-based process involving global experts and country input. The childhood immunization schedule, carefully guided by WHO, has been adopted by all countries, and has saved at least 154 million lives over the past 50 years. The schedule remains essential for the health and wellbeing of every child and every community. These schedules have continually evolved with science and now safeguard children, adolescents and adults against 30 infectious diseases.  

Every vaccine recommendation by the Strategic Advisory Group of Experts on Immunization (SAGE), an independent advisory group to WHO, is grounded in rigorous review of evidence and carefully designed to offer the best protection against serious diseases and to be delivered when most needed.   

When immunization schedules are delayed or disrupted, or altered without evidence review, there is a sharp increase in the risk of infection not only for the child, but also for the wider community. Infants too young to be vaccinated and people with weakened immune systems or underlying health conditions are at greatest risk.  

Autism and neurodevelopmental disorders are among priority mental health and neurological conditions being discussed at the 4th UN High-Level Meeting on NCDs and mental health this Thursday, 25 September.  As a global community, we need to do more to understand the causes of autism and how best to care for and support the needs of autistic people and their families.   

WHO is committed to advancing this goal working together with partners including autistic-led organizations and other organizations representing persons with lived experience. WHO also stands with people who are living with autism and their families, a dignified community entitled to evidence-based considerations free of stigma.

Today, the World Health Organization (WHO) has released updated editions of its Model Lists of Essential Medicines (EML) and Essential Medicines for Children (EMLc), adding new treatments for various types of cancer and for diabetes with associated comorbidities such as obesity. Medicines for cystic fibrosis, psoriasis, haemophilia and blood-related disorders are among the other additions.

WHO EML and EMLc include medicines for priority health needs of populations. They are adopted in over 150 countries, serving as a basis for public sector procurement, supply of medicines and health insurance, reimbursement schemes. The revisions mark the 24th edition of WHO EML and 10th edition of EMLc.

“The new editions of essential medicines lists mark a significant step toward expanding access to new medicines with proven clinical benefits and with high potential for global public health impact,” said Dr Yukiko Nakatani, Assistant Director-General for Health Systems, Access and Data.

Launched in 1977 largely to promote better access to medicines in developing countries, the WHO Model Lists have become a trusted global policy tool for decisions related to the selection and universal coverage of medicines within all health systems.

The WHO Expert Committee on the Selection and Use of Essential Medicines reviewed 59 applications, including 31 proposals for the addition of new medicines or medicine classes. As a result, 20 new medicines were added to the EML and 15 to the EMLc, along with new use indications for seven already-listed products. The updated lists now include a total of 523 essential medicines for adults and 374 for children, reflecting the most pressing public health needs.

Cancer is the second leading cause of death globally, claiming nearly 10 million lives each year and responsible for almost one in three premature deaths from noncommunicable diseases. Cancer treatments have been a major focus of the WHO EML for the past decade. With cancer medicines accounting today for about half of all new drug approvals by regulatory agencies, the Expert Committee applies rigorous criteria to recommend only those therapies that offer the greatest clinical benefit. As a result, few approved cancer medicines are included – only those proven to prolong life by at least 4-6 months.

Seven applications encompassing 25 cancer medicines were evaluated. As part of broader efforts to reduce inequities in cancer care, the Committee recommended increasing access to PD-1/PD-L1 immune checkpoint inhibitors, a class of immunotherapy medicines that help the body’s immune system recognize and attack cancer cells more effectively. Pembrolizumab was added to the EML as a first-line monotherapy for metastatic cervical cancer, metastatic colorectal cancer, and metastatic non-small cell lung cancer. For the latter, atezolizumab and cemiplimab are included as therapeutic alternatives.

The Committee also considered several expert-recommended strategies – highlighted in the cancer experts report – aimed at improving access to and affordability of cancer treatments. It endorsed evidence-based clinical and health system strategies, including dose optimisation approaches, to improve access. The Committee emphasized that while health system reforms require time and government action, clinical strategies can be implemented immediately to deliver faster benefits, especially in resource-limited settings.

Diabetes and obesity are two of the most urgent health challenges facing the world today. Over 800 million people were living with diabetes in 2022, with half going untreated. At the same time, more than 1 billion people worldwide are affected by obesity, and rates are rising especially fast in low- and middle-income countries. These two conditions are closely linked and can lead to serious health problems, including heart disease and kidney failure.

The WHO Expert Committee reviewed strong scientific evidence showing that a group of medicines called glucagon-like peptide-1 (GLP-1) receptor agonists can help people with type 2 diabetes – especially those who also have heart or kidney disease – by improving blood sugar control, reducing the risk of heart and kidney complications, supporting weight loss, and even lowering the risk of early death.

GLP-1 receptor agonists – semaglutide, dulaglutide and liraglutide – and the GLP-1/glucose-dependent insulinotropic polypeptide (GIP) dual receptor agonist (tirzepatide) have been added to the EML. They are used as glucose lowering therapy for adults with type 2 diabetes mellitus with established cardiovascular disease or chronic kidney disease and obesity (defined as body mass index (BMI) ≥ 30kg/m2). This provides clear guidance to countries on which patients can benefit most from these therapies.

High prices of medicines like semaglutide and tirzepatide are limiting access to these medicines. Prioritizing those who would benefit most, encouraging generic competition to drive down prices and making these treatments available in primary care – especially in underserved areas – are key to expanding access and improving health outcomes. WHO will continue monitoring developments, support fair pricing strategies, and help countries improve access to these life-changing treatments.

“A large share of out-of-pocket spending on noncommunicable diseases goes toward medicines, including those classified as essential and that, in principle, should be financially accessible to everyone,” said Deusdedit Mubangizi, WHO Director of Policy and Standards for Medicines and Health Products. “Achieving equitable access to essential medicines requires a coherent health system response backed by strong political will, multisectoral cooperation, and people-centred programmes that leave no one behind.”

More details of the Expert Committee’s recommendations, describing the additions, changes and removal of medicines and formulations, and decisions not to recommend medicines are available in the Executive Summary here.

Note to editors

The meeting of the 25th WHO Expert Committee on the Selection and Use of Essential Medicines was held at WHO Headquarters in Geneva, Switzerland, from 5 to 9 May 2025. The Expert Committee considered a total of 59 applications, assessing the scientific evidence on each medicine’s effectiveness, safety, comparative cost, and overall cost-effectiveness to inform its recommendations. The Committee also considered proposals relating to the definitions and update of the AWaRe (Access, Watch, Reserve) classification of antibiotics.

The Model Lists are updated every two years by an Expert Committee, made up of recognized specialists from academia, research and the medical and pharmaceutical professions, to address new health challenges, prioritize highly effective therapeutics and improve affordable access.

The Integrated Food Security Phase Classification (IPC), of which WHO is a member, today issued a Food Insecurity and Malnutrition Alert for the Gaza Strip. The details are as noted below. 

The Integrated Food Security Phase Classification (IPC) has issued a stark warning today that the worst-case scenario of Famine is now unfolding in the Gaza Strip. Amid relentless conflict, mass displacement, severely restricted humanitarian access, and the collapse of essential services, including healthcare, the crisis has reached an alarming and deadly turning point. 

Mounting evidence shows that widespread starvation, malnutrition, and disease are driving a rise in hunger-related deaths. Latest data indicates that Famine thresholds have been reached for food consumption in most of the Gaza Strip and for acute malnutrition in Gaza City.

• End hostilities
• Ensure humanitarian access
• Protect civilians, aid workers, and civilian infrastructure
• Restore life-saving and multi-sectoral humanitarian assistance safely and with dignity
• Restore the flow of commercial goods and local production capacities.

The Integrated Food Security Phase Classification (IPC) is an innovative multi-partner initiative for improving food security and nutrition analysis and decision-making. By using the IPC classification and analytical approach, governments, UN agencies, nongovernmental organizations, civil society and other relevant actors work together to determine the severity and magnitude of acute and chronic food insecurity, and acute malnutrition situations in a country, according to internationally recognized scientific standards.

The main goal of the IPC is to provide decision-makers with a rigorous, evidence- and consensus-based analysis of food insecurity and acute malnutrition situations, to inform emergency responses as well as medium- and long-term policy and programming.

As we mark World Hepatitis Day, WHO calls on governments and partners to urgently accelerate efforts to eliminate viral hepatitis as a public health threat and reduce liver cancer deaths.

"Every 30 seconds, someone dies from a hepatitis-related severe liver disease or liver cancer. Yet we have the tools to stop hepatitis,” said Dr Tedros Adhanom Ghebreyesus, WHO Director-General.

Viral hepatitis – types A, B, C, D, and E – are major causes of acute liver infection. Among these only hepatitis B, C, and D can lead to chronic infections that significantly increase the risk of cirrhosis, liver failure, or liver cancer. Yet most people with hepatitis don’t know they’re infected. Types B, C, and D affect over 300 million people globally and cause more than 1.3 million deaths each year, mainly from liver cirrhosis and cancer.

The International Agency for Research on Cancer (IARC) recently classified hepatitis D as carcinogenic to humans, just like hepatitis B and C. Hepatitis D, which only affects individuals infected with the hepatitis B, is associated with a two- to six-fold higher risk of liver cancer compared to hepatitis B alone. This reclassification marks a critical step in global efforts to raise awareness, improve screening, and expand access to new treatments for hepatitis D.

“WHO has published guidelines on testing and diagnosis of Hepatitis B and D in 2024, and is actively following the clinical outcomes from innovative treatments for hepatitis D,” said Dr Meg Doherty, incoming Director of Science for Health at WHO.

Treatment with oral medicine can cure hepatitis C within 2 to 3 months and effectively suppress hepatitis B with life-long therapy. Treatment options for hepatitis D are evolving. However, the full benefit of reducing liver cirrhosis and cancer deaths can only be realized through urgent action to scale up and integrate hepatitis services – including vaccination, testing, harm reduction, and treatment – into national health systems.

Encouragingly, the majority of low- and middle-income countries (LMICs) have strategic plans on hepatitis in place and progress in national hepatitis responses is increasing:

• in 2025, the number of countries reporting national hepatitis action plans increased from 59 to 123;
• as of 2025, 129 countries have adopted policies for hepatitis B testing among pregnant women, up from 106 reported in 2024; and
• 147 countries have introduced the hepatitis B birth dose vaccination, an increase from 138 in 2022.

However, critical gaps remain in service coverage and outcomes, as stated in the 2024 Global Hepatitis Report:

To mark World Hepatitis Day, WHO is partnering with Rotary International and the World Hepatitis Alliance to strengthen global and local advocacy. This year’s campaign “Hepatitis: Let’s break it down” demands action to confront the rising toll of liver cancer linked to chronic hepatitis infections. It also calls for decisive steps to dismantle persistent barriers – from stigma to funding gaps – that continue to slow progress in prevention, testing, and treatment.

Through a joint webinar and coordinated outreach, the partnership underscores the vital role of civil society and community leadership, alongside governments, in sustaining momentum and accelerating progress toward hepatitis elimination.