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Last Posted: Feb 02, 2023
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How our microbiome is shaped by family, friends and even neighbours.
Callaway Ewen et al. Nature 2023 1

People living in the same household share more than just a roof (and pints of milk). Be they family or flatmate, housemates tend to have the same microbes colonizing their bodies, and the longer the cohabitation, the more similar these microbiomes become. The conclusion — based on a new study of the gut and mouth microbiomes of thousands of people from around the world1 — raises the possibility that diseases linked to microbiome dysfunction, including cancer, diabetes and obesity, could be partly transmissible.

Acute respiratory distress syndrome after SARS-CoV-2 infection on young adult population: International observational federated study based on electronic health records through the 4CE consortium
B Moal et al, PLOS ONE, Jan 4, 2023

Among the 75,377 hospitalized patients with positive SARS-CoV-2 PCR, 1001 young adults presented with ARDS (7.8% of young hospitalized adults). Their mortality rate at 90 days was 16.2% and they presented with a similar complication rate for infection than older adults with ARDS. Peptic ulcer disease, paralysis, obesity, congestive heart failure, valvular disease, diabetes, chronic pulmonary disease and liver disease were associated with a higher risk of ARDS. We described a high prevalence of obesity (53%), hypertension (38%- although not significantly associated with ARDS), and diabetes (32%).

Genomics and phenomics of body mass index reveals a complex disease network.
Huang Jie et al. Nature communications 2022 12 (1) 7973

Using a BMI genetic risk score including 2446 variants, 316 diagnoses are associated in the Million Veteran Program, with 96.5% showing increased risk. A co-morbidity network analysis reveals seven disease communities containing multiple interconnected diseases associated with BMI as well as extensive connections across communities. Mendelian randomization analysis confirms phenotypes across many organ systems, including conditions of the circulatory (heart failure, ischemic heart disease, atrial fibrillation), genitourinary (chronic renal failure), respiratory (respiratory failure, asthma), musculoskeletal and dermatologic systems.

Assessment of Body Mass Index, Polygenic Risk Score, and Development of Colorectal Cancer.
Chen Xuechen et al. JAMA network open 2022 12 (12) e2248447

Do associations of excess weight with development of colorectal cancer differ by polygenic risk for colorectal cancer (CRC)? In this case-control study including 9169 participants (5053 CRC cases, 4116 controls), associations of excess weight with risk of CRC were independent of polygenic risk for CRC. The association of obesity with CRC risk was equivalent to that of having a 41-percentiles higher polygenic risk score. The findings of this study could contribute to enhanced quantification and communication of the association of excess weight with CRC.

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Disclaimer: Articles listed in the Public Health Genomics and Precision Health Knowledge Base are selected by the CDC Office of Public Health Genomics to provide current awareness of the literature and news. Inclusion in the update does not necessarily represent the views of the Centers for Disease Control and Prevention nor does it imply endorsement of the article's methods or findings. CDC and DHHS assume no responsibility for the factual accuracy of the items presented. The selection, omission, or content of items does not imply any endorsement or other position taken by CDC or DHHS. Opinion, findings and conclusions expressed by the original authors of items included in the update, or persons quoted therein, are strictly their own and are in no way meant to represent the opinion or views of CDC or DHHS. References to publications, news sources, and non-CDC Websites are provided solely for informational purposes and do not imply endorsement by CDC or DHHS.

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