Mr. Raphael Mwezi
Recognising the role of pesticide regulators in suicide preventionPesticide regulators: the hidden heroes of suicide prevention
For World Suicide Prevention Day 2026, we celebrate and recognise the important role of pesticide regulators. By limiting access to acutely toxic pesticides – a highly lethal method of suicide – they are making a significant contribution to global suicide prevention.
Name
Mr. Raphael Mwezi
Job role
Head of Toxicology Unit, Tanzania Plant Health and Pesticide Authority
Country
Tanzania
Summary of activity
Mr. Mwezi has spearheaded research into pesticide poisoning in Tanzania. This has shown that intentional pesticide poisoning is a major issue, particularly among young people.
His research has also helped identify the pesticides responsible for poisoning cases and deaths, supporting the Tanzania’s recent ban on 23 pesticides. This includes a specific deadly pesticide that his research suggests may be responsible for nearly half of all pesticide-related deaths.
Why is this work important to you?
“Pesticide regulation is not only about protecting crops and agricultural productivity; it is also an important public health intervention. Evidence-based regulation of highly hazardous pesticides can prevent poisoning, save lives and protect vulnerable communities. Our responsibility as regulators is to ensure that scientific evidence is translated into practical action while working with health professionals, researchers, communities and other stakeholders to promote safer alternatives and strengthen prevention.”