The power of personalized nutrition lies in being able to conduct clinical research on healthy people while capturing metabolic markers sensitive to the impact of environmental and metabolic stressors (e.g. diet, changing sex hormones and the menstrual cycle).

What is the role of stress and stress-related hormones in emotion regulation?

Sexuality is a fundamental part of being human. Yet, for many people with disabilities, it remains overlooked, unsupported, and surrounded by stigma. NWO-VIDI Sex, Care & Robots confronts that long-standing neglect with a project that envisions an urgent yet straightforward future: one in which sexual…

This study is the first to directly relate brain development to sex differences and school performance. The results debunk the myth that brain development is slower in boys.

‘Visibility and secrecy are both valuable tactics and should not be antagonized in LGBT movements, ’ says Jingshu Zhu. Zhu defended her dissertation on Wednesday 21 February.

It often takes longer for women with heart problems to get the right diagnosis. In her Annie Romein-Verschoor Lecture, Professor Hester den Ruijter will talk about how hormones influence the heart and the importance of medical research that focuses specifically on women.

The soil ecosystem consists of the largest reservoir of biodiversity on Earth.

Growth hormone profiles are pulsatile and highly variable between individuals, limiting the implementation of mathemathical models to quantify an individual's secretion.

This book presents a new framework for regulating human-like machines designed for emotional and sexual engagement, often powered by AI.

Combined hormonal contraceptives (CHC) are associated with an increased risk of venous thromboembolism (VTE). In 2013, a review was published by the European Medicines Agency (EMA). In this review, the authors concluded that the risk of VTE varies by the type of progesterone in the CHC. Subsequently,…

Plants are colonized by an astounding number of microorganisms that can provide different life-support functions, including nutrient acquisition and protection against (a)biotic stresses like drought or pathogen attack.

Regulating Relations: Controlling Sex and Marriage

PhD defence

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…

Vicencio Oostra, who defended his PhD-thesis at the IBL successfully in June 2013, published new insights into the hormonal regulation of butterfly responses to fluctuating environments.

During a well-attended Studium Generale lecture at Rijksmuseum Boerhaave, Professor Ellen de Bruijn demonstrated how hormonal fluctuations influence the female brain. 'We urgently need more attention for the mental health of girls and women during transitional periods.'

Even though it is generally known that Autism and ADHD are more common in men, and depression or anxiety disorders are more common among women, it is still not well understood if, how and when sex differences impact neurodiversity and mental health. To better understand this complex issue, 25 international…

Sex without mutual consent is a criminal offence. The proposed new Dutch sexual offences law aims to better protect victims of sexually transgressive behaviour. But the key issue is this: the rules of evidence have not changed, so will victims actually benefit from the new legislation?

PhD defence

Promotor: P.M. Brakefield

The Psychology Research Seminars are organised by and for institute staff. They offer an opportunity to share knowledge, gain new insights, and meet colleagues from various disciplines.

‘Visibility and secrecy are both valuable tactics and should not be antagonized in LGBT movements, ’ says Jingshu Zhu. Zhu will defend her dissertation on Wednesday 21 February. Time for a short interview with the PhD candidate.

Filamentous Actinobacteria, such as Streptomyces, produce a plethora of chemically diverse bioactive metabolites that have found applications across medicine, agriculture and biotechnology.

Why did fewer women suffer from osteoporosis in the past than today? And which aspects of a city make public spaces safe, accessible and comfortable for all residents? These two research questions will be explored in more detail thanks to an Impulse Grant from the Leiden University Fund.

Sex without mutual consent is a criminal offence. The proposed new Dutch sexual offences law aims to better protect victims of sexually transgressive behaviour. But the key issue is this: the rules of evidence have not changed, so will victims actually benefit from the new legislation?

From the effects of hormone fluctuations in women via the interior structure of giant planets to the prehistory of the languages: six Leiden researchers have been awarded a Consolidator Grant by the European Research Council.

Discomfort obstructs scientific discussions about sex, argue Eva and Deva from the LOEF foundation. In their Bachelor Honours Class, students approach sex holistically. The results are positive: ‘I’ve become much more open about sex.’

Psychologist Ellen de Bruijn is investigating what hormonal fluctuations do to women's behaviour and well-being. The National science funding body NWO honoured her research with a Vici grant; earlier this year she received an ERC Consolidator Grant. Read the interview with De Bruijn about her resear…

Do young people who want to change gender have the unconditional right to medical treatment? Pediatric Endocrinologist Martine de Vries, who is also Professor of Medical Ethics, treats transgender children and adolescents. She will discuss this in her ‘Pride Talk’ on 18 September.

Asexual procreation in female wasps leads to an accumulation of genetic mutations, and the shrivelling of their sex organ. Leiden biologist Ken Kraaijeveld published this discovery in Evolution. His research is one of the first experimental studies into the consequences of asexual procreation.

Leiden and Austrian researchers have succeeded in further uncovering how a plant cell passes on the growth hormone auxin in a directional manner to the next cell. Three proteins that cling together in a bunch appear to be essential for this important transport process. ‘This discovery solves a crucial…

How do you measure over-protective parenting? Why are girls more likely to develop anxiety disorders? And do the social skills of therapists really make a difference in treatment outcomes?

In this research line, the role pharmacological agents and neurochemcial processes play in behavior and cognition is examined with a particular focus on pain, placebo and nocebo effects and intensive care treatments.

The trend of legal recognition for gay and lesbian couples is broadening. More and more rights are becoming available to same-sex partners – in more and more European countries. Leiden Law School and the French Institute for Demographic Studies publish detailed database and comparative analysis.

Christa Tobler, Professor of European law, attended and spoke on the implications of the UK Supreme Court’s ruling for EU non-discrimination law in the case For Women Scotland Ltd (Appellant) v The Scottish Ministers (Respondent) in London.

Carlotta Rigotti, postdoctoral researcher at eLaw – Center for Law and Digital Technologies, has published a new article, Desire in Code: Legal Perspectives on Sex Robots and Consent, in Law, Culture and the Humanities.

Sexuality is a fundamental part of being human. Yet, for many people with disabilities, it remains overlooked, unsupported, and surrounded by stigma. Eduard Fosch-Villaronga confronts that long-standing neglect with a project that envisions an urgent yet straightforward future: one in which sexual rights…

In July 2019 Asser Press published the book 'Sweetie 2.0—Using Artificial Intelligence to Fight Webcam Child Sex Tourism’ which was coedited by Simone van der Hof en Bart Schermer from the Center for Law and Digital Technologies, Bert-Jaap Koops from the Tilburg Institute for Law, Technology, and Society…

Carlotta Rigotti, postdoctoral researcher at eLaw, has just published her new monograph, The Regulation of Sex Robots: Gender and Sexuality in the Era of Artificial Intelligence.

Researchers, policymakers and funders have to take more account of the effect of sex and gender in scientific research. This is the view presented in an advice paper published by LERU, the League of European Research Universities. The lead author is Vice-Rector Simone Buitendijk.

Discovering whether a chick is male or female while it is still in the egg. Leiden biotech company In Ovo, a spin-off of Leiden University, has been given an investment of several million euros to further develop its unique test method. The founders - both Leiden alumni - Wouter Bruins and Wil Stutterheim…

Women are more often diagnosed with depression, whereas ADHD is much more frequently detected in men. And there are other more striking differences. What role does the brain play in mental health and what is the influence of the environment? For answers to these questions, listen to the ‘(Un)gendered…

‘Everyone’s talking about it, everyone thinks everyone else is doing it, but the reality is disappointing,’ says biochemist Gerard van Westen in his 3 October University lecture in the Van der Werfpark. In the full marquee, he gets a laugh with this suggestion that artificial intelligence is comparable…