Studying how single DNA molecules behave helps us to better understand genetic disorders and design better drugs. Until now however, examining DNA molecules one-by-one was a slow process. Biophysicists from Delft University of Technology and Leiden University developed a technique that speeds up screening…

People who have negative expectations about a treatment actually experience more pain. Merve Karacaoglu discovered in her PhD research that anxious and pessimistic individuals are particularly susceptible to this nocebo effect. However, this sensitivity comes with a silver lining.

Autistic children have indeed potential: most of their emotional abilities improve with age, concludes developmental psychologist Boya Li in her research on the emotional development of autistic children. Promotion on 10 November 2021.

Knowing whether or not a treatment is working just by wearing your watch? Data scientist Ahnjili ZhuParris has identified a lot of opportunities for the use of machine learning in clinical research to monitor test subjects at home.

One discovered that arteriosclerosis resembles an autoimmune disease, while the other developed a system to aid in the search for new medications. For these achievements, Marie Depuydt and Jurren de Groot were awarded the Krijn Rietveld Memorial Innovation Award on the evening of Tuesday 4 June.

The theme of the Heritage Open Days Leiden on 10 and 11 September is sustainability. At four University locations guides will talk about the history of the buildings and how they have been renovated. And there is a first: tours in sign language.

Why does a medicine work well for one person, but cause side effects in another? Research by Laura de Jong shows that it’s not just our DNA that matters – other medicines and illnesses can also affect how our bodies respond.

In 2025, our colleagues from the Institute of Psychology once again made a strong presence in the media. From (inter)national newspapers to podcasts, discover where they shared their expertise in the media this year.

Greenhouse gas emissions related to pharmaceutical consumption increased by 77 percent over the past 24 years, according to a Leiden University study published in The Lancet Planetary Health. Moreover, efficiency gains have stalled since 2008. ‘Our best option is reducing consumption and minimising…

Psychologist Ellen de Bruijn studies the effects of hormonal fluctuations on behaviour and on the brain over a woman's life course. With an ERC Consolidator grant, she and 3 PhDs and a postdoc will further her EEG research on the different stages at which girls and women experience strong hormonal f…

A flu virus could cause a pandemic. And then we would be poorly armed because flu viruses are starting to become resistant to flu medications like Tamiflu. Chemist Merijn Vriends successfully worked on an improved version of such medications. He will be awarded his doctorate on September 12th.

Graduating in international law and fulfilling a childhood dream by performing your own theatre show. Alumna Fleur Verhoeff has achieved both. How did she go from studying law to the performing arts? And how does her background in international law help?

PhD candidate Sibel Bahtiri is one of the new Faces of Science. In videos and blogs, she will show what life is like as a young researcher.

The project will further the development of policies, practices, and capabilities in responsible academic career assessment.

LUMC and Leiden University will start the new two-year online master's program in Transfusion Medicine and Cellular and Tissue Therapies from October 2023.

Preventing or delaying disease often requires lifestyle changes, which turns out to be difficult. Valentijn Visch and Sandra van Dijk are researching how to help people change their behaviour.

The university has been shaping the city of Leiden for 450 years. A brief history of the university buildings that have helped define the city.

'We can uncover new, non-pharmacological strategies to help individuals, especially those struggling with weight los.' Psychologist Aleksandrina Skvortsova receives a LUF grant for her research project 'Mind Over Meal: Unraveling placebo effects on hunger, food-related brain activity and food choice…

Sustainable biotechnology, new insights into genome evolution and combining forces in mathematics. The NWO has awarded grants to these three innovative Leiden research projects in the ENW-M Open Competition.

The Schoof cabinet has presented its budget. As expected, higher education is facing severe cuts. In the coming period, the Executive Board will regularly look at the consequences of what it deems an irresponsible policy.

Prof. dr. Pancras Hogendoorn is stepping down as dean of the Faculty of Medicine and vice-chair of the Executive Board of Leiden University Medical Centre (LUMC). He is also resigning from all associated secondary posts. Hogendoorn has taken his decision in anticipation of the findings of an inquiry…

The Choose a Language Day was created to make high school students enthusiastic about choosing a linguistic profile and further education. Third-years were able to learn about different language studies at the Faculty of Humanities.

Leiden psychologists Janine Westendorp and Liesbeth van Vliet have investigated types of communication that seriously ill patients may experience as harmful. The results of this research were published in the American journal Cancer. And the results have now also been published as a poster for education…

Veel Nederlanders hebben fysieke, psychische en sociale problemen tegelijk. Zij hebben hulp nodig van meerdere professionals uit verschillende organisaties. Fia van Heteren onderzoekt hoe deze professionals met elkaar én met cliënten samenwerken, en welke factoren deze samenwerking versterken of bel…

From a vegan community kitchen to a green framework for drug development: sustainability became more visible in everyday campus life at Leiden University in 2025.

The Faculty Board and the Institute of Private Law have agreed to combine the disciplines of child law, international children’s rights and health law into one Department of Child Law and Health Law.

On the 30th of December, we received the sad message that our Kenyan colleague, Kennedy Kaminju Kariuki died on December 28, 2023 in the NW hospital in Nairobi at the age of 35 years from organ and heart failure. Kennedy was a PhD candidate at the CML, Leiden University.

On 24 and 25 April 2025, the Trippenhuis in Amsterdam — home to the Royal Netherlands Academy of Arts and Sciences (KNAW) — hosted an interdisciplinary workshop organized by dr. Rafal Matuszewski, an ancient historian at the Institute for History in Leiden.

Never before has so much research been carried out on the therapeutic effect of psychedelic drugs. Researchers at the LIBC Public Day are happy about the effect the drugs can have on depression, anxiety and PTSS, but at the same time they have some doubts. ‘The hype is bound to crash before long.’

The university finds it important that students and staff are offered a safe environment. Read here about the safety measures in place and what you should do in case of emergencies or other incidents.

Conference

Should we cut our ties with Israel or maintain them? The event ‘A university conversation on Israel/Palestine’ on 1 July revealed the depth of feeling about the conflict, with students and staff grappling with academic values and moral dilemmas.

It is exactly one year ago that the university had to close, bang in the middle of the academic year. Suddenly, on that third Monday in March, we found ourselves at home, working and studying online – many of us from that cramped attic or student room. The momentous coronavirus year in pictures.

Professor Bussemaker and Professor Koenders draw lessons from the handling of the current corona crisis. In a blended guest lecture with some 60 students in Wijnhaven and some 250 online participants, they entered into a discussion led by Willemijn Aerdts. The guest lecture took place on May 25.

The whole world is waiting anxiously for sufficient supplies of coronavirus vaccines. As Launch Navigator at Pfizer, alumnus Dennis de Mik must help ensure that the Netherlands receives 19.8 million doses of the Pfizer/BioNTech vaccine. How is he going about this and how has his Bio-Pharmaceutical Sciences…

Studying is already a lot of work, so on this page you'll find the most sought-after information for first-year students. Do you feel something important is missing? Let us know via the feedback button, and we'll improve it for the next student.

Studying is already a lot of work, so on this page you'll find the most sought-after information for master's students. Do you feel something important is missing? Let us know via the feedback button, and we'll improve it for the next student.

When writing a thesis or paper you must make good use of the insights you have gained during your lectures and studies so far. You should also refer to relevant literature and carry out your own research on the topic.

For months, students dedicated themselves to a more sustainable world alongside their studies, as part of the LDE Sustainability Honours Programme. What solutions did they come up with for the challenges posed by organisations like Naturalis and ClimateMatters?

In a recent mega-analysis, researchers from Leiden University aimed to clarify the contradictory findings of research into social anxiety disorder. They found that to obtain reliable research results having the largest possible sample size is important. Publication in NeuroImage:Clinical.

Using mathematics to help children with bone cancer. It sounds a little strange, but for statistician Marta Fiocco, it's just her job. She gets a substantial grant from KiKa for it. With that money, she is going to study the effect of chemotherapy adjustments.

On Tuesday 12 January 2021, the annual Meijers prizes and thesis prizes were awarded at the online New Year’s event broadcast from the Old Observatory.

Researchers at Leiden University have created a unique model that mimics how disease develops after a dengue infection. This 'dengue-on-a-chip' model helps them study the virus more effectively. The timing is crucial, as climate change is causing dengue to spread worldwide.

A delegation from the University of Edinburgh recently visited Leiden University to deepen their collaboration. What makes Edinburgh such an attractive partner?

How do organs work in the body, and how can we create mini-organs to study diseases and test new medicines? That’s the idea behind organ-on-a-chip technology. During his PhD, Flavio Bonanini worked on developing the best possible mini-livers. ‘Make them as simple as possible, and as complex as neede…

In June the Final Festival took place, the closing event of the 'Social Science Lab'. New participants of Honours College Science and Society presented their solution for a current social problem.

Fiffy the chimpanzee had rapidly developed cataracts in both eyes that made her as good as blind. Eye doctors at the Leiden University Medical Center (LUMC) have now managed to replace the lenses in both her eyes. As far as we know, Fiffy, who is thought to be between 30 and 40 years old, is the first…

Seventeenth-century Danish scientist Niels Stensen made groundbreaking discoveries in the anatomy of the body and of Earth. This Leiden alumnus’s theories are still relevant, as an exhibition at the Oude UB shows.

Ilze Bot wants to reduce the prevalence of cardiovascular diseases. Her research focuses on mast cells, which protect us from infections but can also make us ill.

Professor André Baranski is a champion for improving organ procurement. He believes there should be standardised training and certification for procurement surgeons. This is what he said in his inaugural lecture on 16 April.