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Acute COVID-19 severity and mental health morbidity trajectories in patient populations of six nations: an observational study

Acute COVID-19 severity and mental health morbidity trajectories in patient populations of six nations: an observational study
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United kingdomLi luJuan gonzThomas wergeJebsen stiftelsenKarina banasikEmmam fransRagnar nesvArchie campbellHenrik hjalgrimPatrickf sullivanKhoa manh dinhKelli lehtoEdda bjork thordardottirDaniel mccartneyMaria didriksen

Depressive symptoms, mental wellbeing, and substance use among adolescents before and during the COVID-19 pandemic in Iceland: a longitudinal, population-based study

Depressive symptoms, mental wellbeing, and substance use among adolescents before and during the COVID-19 pandemic in Iceland: a longitudinal, population-based study
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Icelandic research fundShort warwick edinburgh mental wellbeing scaleSupplementary materialsஐஸ்லாந்து ஆராய்ச்சி நிதிகுறுகிய வார்விக் எடின்பர்க் மன நல்வாழ்வு அளவுதுணை பொருட்கள்

COVID-19 pandemic has had significant impact on the mental health of adolescents

A study of over 59,000 Icelandic adolescents by a team of Icelandic and North American behavioral and social scientists found that COVID-19 has had a significant, detrimental impact on adolescent mental health, especially in girls. The study is the first to investigate and document age- and gender-specific changes in adolescent mental health problems and substance use during the COVID-19 pandemic, while accounting for upward trends that were appearing before the pandemic.

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PCB levels in Icelandic orcas depend on what they eat

Some Icelandic killer whales have very high concentrations of polychlorinated biphenyls in their blubber, according to a new study. But it seems that other orcas from the same population have levels of polychlorinated biphenyls (PCBs) that are much lower. It mainly depends on what they eat. PCBs are industrial chemicals banned decades ago, after they were found to affect the health of both humans and wildlife. But because they degrade very slowly after being released in the environment, they still accumulate in the bodies of marine mammals. After collecting skin and blubber biopsies from 50 orcas in Iceland, the researchers found considerable variation in contaminant concentrations and profiles across the population.

Atlantic oceanMelissa mckinneyIcelandic research fundWildlife health division of environmentCanada researchEngineering research council of canadaCanada research chairs programMcgill universityNatural sciencesSome icelandicCanada research chairEcological changeNorth atlanticEnvironmental scienceEngineering research councilWildlife health division

PCB contamination in Icelandic orcas: a matter of diet

Image caption: These killer whales may appear healthy, but a new study has found extremely high levels of PCB contamination in some of the whales. There was a 300-fold difference between the levels of PCBs among the most contaminated orcas compared to the least contaminated ones. The variation was mainly due to their eating habits. CREDIT: Filipa Samarra - Icelandic Orca Project A new study from McGill University suggests that some Icelandic killer whales have very high concentrations of PCBs (polychlorinated biphenyls) in their blubber. But it seems that other orcas from the same population have levels of PCBs that are much lower. It mainly depends on what they eat.

Atlantic oceanMelissa mckinneyFilipa samarraWildlife health division of environmentEngineering research council of canadaNatural sciencesIcelandic research fundCanada researchCanada research chairs programMcgill universityMcgill university is canadaMcgill department of natural resource sciencesAssistant professorNatural resource sciencesCanada research chairEcological change