This is the accepted version of the paper.This version of the publication may differ from the final published version. This study was supported by the University of Gothenburg Centre for PersonCentred Care (GPCC). Permanent repository link Conflict of Interest StatementNo conflict of interest is declared. AbstractMaternal obesity is linked with adverse outcomes for mothers and babies. To get an overview of risk related to obesity in pregnant women, a systematic review of reviews was conducted. For inclusion, reviews had to compare pregnant women of healthy weight with women with obesity, and measure a health outcome for mother and/or baby. Authors conducted full-text screening, quality assurance using the AMSTAR tool, and data extraction steps in pairs. Narrative analysis of the 22 reviews included showed gestational diabetes, pre-eclampsia, gestational hypertension, depression, instrumental and caesarean birth, and surgical site infection to be more likely to occur in pregnant women with obesity compared to women with a healthy weight. Maternal obesity is also linked to greater risk of preterm birth, large-for-gestational-age babies, fetal defects, congenital anomalies, and perinatal death. Furthermore breastfeeding initiation rates are lower and there is greater risk of early breastfeeding cessation in women with obesity compared with healthy weight women. These adverse outcomes may result in longer duration of hospital stay, with concomitant resource implications. It is crucial to reduce the burden of adverse maternal and fetal/child outcomes caused by maternal obesity.Women with obesity need support to lose weight before they conceive, and to minimise their weight gain in pregnancy.4

Background: The COVID-19 pandemic is primarily a crisis that affects people's physical health. However, it is well-known from previous epidemics and pandemics that there are other indirect negative impacts on mental health, among others. The purpose of this scoping review was to explore and summarise primary empirical research evidence on how the COVID-19 pandemic and societal infection control measures have impacted children and adolescents' mental health.Methods: A literature search was conducted in five scientific databases: PubMed, APA PsycINFO, Web of Science, CINHAL, and Social Science Premium Collection. The search string was designed using the Population (0–18 years), Exposure (COVID-19), Outcomes (mental health) framework. Mental health was defined broadly, covering mental well-being to mental disorders and psychiatric conditions.Results: Fifty-nine studies were included in the scoping review. Of these, 44 were cross-sectional and 15 were longitudinal studies. Most studies reported negative impact of the COVID-19 pandemic on child and adolescent mental health outcomes, yet the evidence was mixed. This was also the case for studies investigating societal control measures. Strong resilience, positive emotion regulation, physical activity, parental self-efficacy, family functioning and emotional regulation, and social support were reported as protective factors. On the contrary, emotional reactivity and experiential avoidance, exposure to excessive information, COVID-19 school concerns, presence of COVID-19 cases in the community, parental mental health problems, and high internet, social media and video game use were all identified as potentially harmful factors.Conclusions: Due to the methodological heterogeneity of the studies and geographical variation, it is challenging to draw definitive conclusions about the real impact of the COVID-19 pandemic on the mental health of children and adolescents. However, the existing body of research gives some insight to how parents, clinicians and policy makers can take action to mitigate the effects of COVID-19 and control measures. Interventions to promote physical activity and reduce screen time among children and adolescents are recommended, as well as parenting support programs.

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