News archive

Conflict causes deaths and injuries, as well as health consequences from the displacement of populations, breakdown of health services and an increased risk of disease transmission. But in DRC that has suffered from conflict and instability for decades, conflict alone is a poor indicator for child health. In his study, Mattias Schedwin, compares coverage of key child health policy indicators across provinces in DRC and their association with child mortality and level of conflict in the country.

To track and analyze caesarean section trends and thus improve maternity care, the Robson classification is used worldwide. A study from Karolinska Institutet in Sweden shows differences between Sweden and Canada, and that the classification system can be further developed to take into account more important variables. The study, published in PLOS Medicine, may contribute to improved and more equal maternity care in the future.

Infants who were given a taste of peanut, milk, wheat and egg from the age of three months had a lower risk of developing a food allergy at the age of three years than controls, reports a study by researchers from Karolinska Institutet in Sweden and the University of Oslo in Norway published in The Lancet.

Severe acute COVID-19 is very rare in children, but SARS-CoV-2 infection can trigger a novel post infectious condition called Multisystem Inflammatory Syndrome in Children (MIS-C). MIS-C is a potentially serious condition, and so far, little has been known on risk factors for developing MIS-C.

In March 2022, André Thunberg had his ISP seminar at the Department of Global Public Health. His research focuses on the prevalence and management of severe paediatric illness in Malawi. Besides his doctoral studies, André also works at Astrid Lindgren Children’s Hospital as a resident doctor.

A mobile app that shows a child's weight development in real-time for children with obesity provides greater weight loss compared to conventional care. The fact that both families and healthcare professionals can follow the same data facilitates individualised extra support when needed. This is shown by a study from Karolinska Institutet published in the International Journal of Obesity.

Screen time is often associated with poor health in young people, but it is more complicated than that, say researchers. We are affected, but differently and not just negatively. What we do on our phones – and what we do when we are not using them – also plays a role in our well-being.

A study in rural Malawi underscores the need for better clinical management of severely ill children with very low blood sugar or blood oxygen levels. The study by researchers at Karolinska Institutet in Sweden and the Parent and Child Health Initiative in Malawi, among others, found high mortality rates for children with either of these symptoms even when they were admitted to a hospital. The findings are published in the journal Bulletin of the World Health Organisation.

Millions of Ukrainian children have been displaced, either internally or as refugees, by the war with Russia. A systematic review by researchers at Karolinska Institutet and Ukraine’s Sumy State University has compiled the scientific literature on children’s health in Ukraine. The study, which is published in the journal Acta Paediatrica, could prove useful for clinicians treating refugee children from Ukraine.

Children with migration backgrounds in Sweden are less likely than other children to receive recommended treatment for psychiatric diagnoses such as ADHD and depression, a paper from Karolinska Institutet published in the journal Epidemiology and Psychiatric Sciences reports.

The risk of adverse pregnancy outcomes in women who tested positive for SARS-CoV-2 is likely lower than several earlier studies have suggested, a national study of all pregnant Swedish women tested for SARS-CoV-2 between March 2020 and January 2021 reports. The study, published in BJOG: An International Journal of Obstetrics and Gynaecology and led by researchers at Karolinska Institutet, shows that the association varies widely depending on the routines used for testing pregnant women.

Research on the role of diet in the development of type 1 diabetes is generally of low evidence, but there are some high-quality studies indicating that longer breastfeeding and later introduction to gluten may reduce the risk of disease. That is according to a systematic review and meta-analysis of available research on foods that may be linked to the risk of developing the type 1 diabetes in childhood. The study by researchers at Karolinska Institutet is published in the journal EBioMedicine.

Neuroblastoma is a type of childhood cancer that develops in infants and young children. Whilst it is a relatively rare form of cancer, it is still responsible for approximately 15 percent of all cancer deaths in children. In a new study published today in Nature Communications, researchers at Karolinska Institutet have discovered that low-risk and high-risk neuroblastoma have different cell identities, which can affect the survival rate.

Children and young people whose mothers had a BMI greater than 30 during early pregnancy are at an increased risk of fatty liver disease. This is shown in a register-based study from Karolinska Institutet and Harvard University published in the journal Journal of Hepatology. As obesity rates increase also in women at a child-bearing age, more and more young people are at risk of developing fatty liver disease, the researchers say.

With the development of more effective treatment for childhood cancer, fertility preservation efforts have become routine at many centers. At the same time, there have been questions about the risks of relapse when re-transplanting ovarian tissue. Now researchers at Karolinska Institutet report on a woman who is expecting her second child after being treated for leukaemia as a teenager. This study, published in Haematologica, may be of great importance to many young women and their families.

Thanks to many years of translational research, some children with the rare childhood cancer neuroblastoma may now be cured. In a study published in the Journal of Clinical Oncology, researchers at among others Karolinska Institutet and University of Gothenburg write that so-called ALK inhibitors should be tried to treat children with high-risk neuroblastoma. That is after an analysis showed that children with mutations in the ALK gene have poorer prognosis.

Early intervention for disruptive behaviour disorders in children reduces the risk of antisocial development and psychiatric problems later in life. Parental training and child CBT are two interventions about which more needs to be known concerning the effects on disruptive behaviour disorders. According to a new doctoral thesis from Karolinska Institutet, both have a positive effect on such disorders, where severity should determine the choice of treatment.

Many diseases caused by a dysregulated immune system, such as allergies, asthma and autoimmunity, can be traced back to events in the first few months after birth. To date, the mechanisms behind the development of the immune system have not been fully understood. Now, researchers at Karolinska Institutet show a connection between breast milk, beneficial gut bacteria and the development of the immune system. The study is published in Cell.

Researchers at Karolinska Institutet found industrial chemicals in the organs of fetuses conceived decades after many countries had banned the substances. In a study published in the journal Chemosphere, the researchers urge decision makers to consider the combined impact of the mix of chemicals that accumulate in people and nature.

Continuous skin-to-skin contact starting immediately after delivery even before the baby has been stabilised can reduce mortality by 25 per cent in infants with a very low birth weight. This according to a study in low- and middle-income countries coordinated by the WHO on the initiative of researchers at Karolinska Institutet published in The New England Journal of Medicine.

Researchers at Karolinska Institutet and the Public Health Agency of Sweden have studied newborn babies whose mothers tested positive for SARS-CoV-2 during pregnancy or childbirth. The results show that although babies born of test-positive mothers are more likely to be born early, extremely few were infected with COVID-19. The study, which is published in the esteemed journal JAMA, supports the Swedish recommendation not to separate mother and baby after delivery.

A study involving researchers at Karolinska Institutet and IMBA – Institute of Molecular Biotechnology of the Austrian Academy of Sciences – demonstrates how zika and herpes viruses can lead to brain malformations during early pregnancy. The researchers used 3D models of human brains to study which mechanisms are involved in virus-induced microcephaly, a condition where babies are born with smaller-than-usual heads. The results are published in the journal Cell Stem Cell.

Many researchers agree that shifting to a more plant-based diet is an important step towards reducing our impact on the climate. A new doctoral thesis from Karolinska Institutet describes the development and test of a new method of providing sustainable school lunches. The new lunch resulted in a 40 per cent reduction in climate impact with no increase in cost or decrease in consumption.

How the immune system adapts to pregnancies has puzzled scientists for decades. Now, findings from an international group of researchers, led by researchers at Karolinska Institutet in Sweden, reveal important changes that occur in the thymus to prevent miscarriages and gestational diabetes. The results are published in the journal Nature.

Depressed children and teenagers have an increased risk of suffering from premature death and a wide range of illnesses later in life. That is according to a large observational study by researchers at Karolinska Institutet in Sweden. The findings highlight the need to look for other potential diseases following childhood or adolescent depression. Other psychiatric conditions, such as anxiety and substance misuse, can explain part of the association. The study is published in JAMA Psychiatry.

Birth asphyxia is one of the most common causes of neonatal death. Researchers at Karolinska Institutet and others have now evaluated a method of resuscitation not previously used by midwives. The study, which is published in The New England Journal of Medicine shows that a laryngeal mask is a safe and easy-to-use alternative to other methods and one that is particularly suitable for use in low-income countries.

Women with breast cancer whose eggs or ovarian tissue were frozen had more children after their diagnosis than women who did not undergo fertility preservation using those methods before start of cancer treatment. That is according to a study by researchers at Karolinska Institutet in Sweden, published in JAMA Oncology. According to the researchers, the result highlights the importance of reproductive counseling and fertility preservation for women who are diagnosed with cancer at a young age.

Recent data suggest that adults may experience long-term symptoms after COVID-19 infection, but if such symptoms also occur in children is still unknown. Children tend to have milder COVID-19 than adults, but in a case-report from Sweden, Professor and pediatrician Jonas F Ludvigsson describes five children with potential “long COVID”. These findings, together with a systematic review of long COVID in children, are published in the journal Acta Paediatrica.

A new study has found that a commonly prescribed anti-depressant may halt growth of a type of cancer known as childhood sarcoma, at least in mice and laboratory cell experiments. The findings, from researchers at Karolinska Institutet in Sweden and MD Anderson Cancer Centre in Texas, ignite hope of novel treatment strategies against this disease. The study is published in the journal Cancer Research.

Researchers at Karolinska Institutet and Science for Life Laboratory in Sweden and Tor Vergata University of Rome in Italy have mapped the immune response in children affected by a rare but life-threatening inflammatory syndrome associated with COVID-19. The study, which is published in the scientific journal Cell, reveals that the inflammatory response differs from that in Kawasaki disease and severe acute COVID-19.

Two recent studies were unable to rule out that H1N1 (“swine flu”) vaccination (“Pandemrix”) and seasonal influenza vaccination given to pregnant women might be associated with autism spectrum disorder in the offspring. Now, a large study by researchers at Karolinska Institutet in Sweden, published in the journal Annals of Internal Medicine, refutes any such association.

Professor Jonas F Ludvigsson, at MEB, KI has been appointed national scientific expert in pediatrics at the Swedish National Board of Health and Welfare.

The vitality of preterm infants should be assessed with an Apgar score, a tool used to measure the health of newborns immediately after birth. That is the conclusion by researchers at Karolinska Institutet in Sweden who in a large observational study examined the value of Apgar scores for preterm infants. The findings are published in the New England Journal of Medicine.

It is highly likely that children can transmit the new coronavirus, which causes COVID-19, but several factors suggest that children are unlikely to be the main drivers of the pandemic. Opening up schools and kindergartens is unlikely to impact COVID-19 mortality rates in older people, according to a systematic review that spanned 47 publications and was conducted by researchers at Karolinska Institutet. The paper is published in the scientific journal Acta Paediatrica.

Only about five per cent of the babies born to mothers with hepatitis C are themselves infected by the disease. A possible reason for this low figure is that the baby’s immune system has already destroyed the virus before birth. A new study from researchers at KI and published in tje journal Gut reveals clear adaptations of the uninfected babies’ immune system that can lead the way to new treatment methods.

Children of parents suffering from mental illness have a higher risk of injuries than other children, according to a study by researchers at Karolinska Institutet in Sweden, published in the journal BMJ. The risk is elevated up to 17 years of age and peaks during the first year of life. The findings highlight the need for parents with mental illness to receive extra support around child injury prevention measures as well as early treatment of mental morbidity among expecting parents.

Two new studies from Karolinska Institutet in Sweden underscore health risks associated with childhood obesity. Children with obesity have a three times higher risk of mortality in early adulthood compared with children in the general population and are more likely to suffer from anxiety and depression. The findings, published in PLOS Medicine and BMC Medicine, highlight the need to identify specific risk factors for children with obesity and find preventative tools, say the researchers.

Researchers from Karolinska Institutet led by Professor Erik Melén have together with an international team mapped the relationship between length of pregnancy and chemical DNA changes in more than 6,000 newborn babies. For each week's longer pregnancy, DNA methylation changes in thousands of genes were detected in the umbilical cord blood (Figure 1).

Babies regularly treated with bath oil and skin cream are no more protected from developing atopic eczema than other babies, according to a study at Karolinska Institutet in Sweden and the University of Oslo in Norway. Early complementary introduction of certain foods to breastfeeding also failed to reduce the presence of atopic eczema during the first 12 months. The findings are published in The Lancet.

Children conceived with assisted reproductive techniques have a somewhat higher mortality risk during their first weeks of life than children conceived naturally, according to a study from Karolinska Institutet in Sweden, published in the journal Fertility and Sterility. The researchers link the increased risk to a higher degree of premature births in IVF-conceived children. The risk of infant mortality is still very small for both groups and after 1 year of age there is no difference.

Babies born with low birth weights are more likely to have poor cardiorespiratory fitness later in life than their normal-weight peers. That is according to a study by researchers at Karolinska Institutet in Sweden published in the journal JAHA. The findings underscore the importance of prevention strategies to reduce low birth weights even among those carried to at term delivery.

Inducing labor after 41 instead of 42 full weeks of pregnancy appears to be safer in terms of perinatal survival, according to new research from the University of Gothenburg, Sahlgrenska and Karolinska Institutet in Sweden. The current study is expected to provide a key piece of evidence for upcoming decisions in maternity care.

Pregnant women with eating disorders should undergo extended pregnancy screenings considering their increased risk of complications. That is the conclusion from a study by researchers at Karolinska Institutet in Sweden published in the journal JAMA Psychiatry. The researchers were, for example, able to show that children to mothers with eating disorders had an increased risk of premature birth and being born with a small head circumference.

Children who have received radiotherapy for a brain tumour can develop cognitive problems later in life. In their studies on mice, researchers at Karolinska Institutet have now shown that the drug lithium can help to reverse the damage caused long after it has occurred. The study is published in the journal Molecular Psychiatry and the researchers are now planning to test the treatment in clinical trials.

Children who suffer mild brain injury due to oxygen deprivation at birth normally do not receive cooling therapy to reduce the risk of permanent damage. Now, researchers at Karolinska Institutet and University College Cork report that these children have significantly impaired cognitive outcomes at 2-3 years of age and therefore should be included in future clinical trials of neuroprotective therapies. The study is published in JAMA Pediatrics.

Researchers at Karolinska Institutet have followed children who have sought emergency care for wheezing during their first years of life and found specific biomarkers that can predict the need for asthma medication several years later. The study is published in the prestigious European Respiratory Journal.

Children are more likely to have higher systolic blood pressure by age six if their mom used the Swedish powdered tobacco product snus during pregnancy. This according to a new study by researchers at Karolinska Institutet published in the Journal of the American Heart Association.

Hi there Kevin Baker, doctoral student at the Department of Public Health Sciences at Karolinska Institutet. Today Friday 20 September you will defend your thesis. Tell us, what is the main focus of your thesis?

Children with Inflammatory Bowel Disease (IBD) run a greater risk of psychiatric disorders, according to a new study from Karolinska Institutet in Sweden published in JAMA Pediatrics. The researchers claim that more psychological support and longer follow-up is needed for the children affected and their parents.

The survival rate among extremely preterm babies has greatly improved in Sweden, a country that offers top-class neonatal care, a study led from Karolinska Institutet published in the esteemed journal JAMA reports.