Antibiotics in Childhood and Cognitive Impairment in Middle and Old Age

Published on March 23, 2022

Imagine your body as a garden, and antibiotics as weed killers. This study looks at the long-term or repeated use of antibiotics in children and adolescents, and its potential impact on cognitive impairment later in life. The researchers collected data from the UK Biobank Database and found that individuals who had been exposed to antibiotics for a significant period of time had an 18% higher risk of developing cognitive impairment in middle and old age compared to those who hadn’t been exposed. The effect was consistent across different subgroups, such as age, sex, and medical conditions like hypertension and diabetes. However, the researchers also discovered that the effect of antibiotics on cognitive impairment was influenced by educational qualification, suggesting that education may play a protective role. This research raises important questions about the long-term consequences of antibiotic use in childhood and emphasizes the need for judicious antibiotic prescription practices. If you’re curious to learn more about this study, check out the original research article!

ObjectivesWe evaluated the effects of long-term/recurrent use of antibiotics in childhood on developing cognitive impairment in middle and old age from UK Biobank Database.MethodsUK Biobank recruited participants aged 37–73 years. Cognitive impairment was ascertained by fluid intelligence questionnaire. Primary outcome was the occurrence of cognitive impairment in middle and old age. Multivariate logistic regression models were used to explore the relationship between long-term/recurrent use of antibiotics and cognitive impairment.ResultsOver 3.8–10.8 years’ follow-up, 4,781 of the 35,921 participants developed cognitive impairment. The odds of cognitive impairment in middle and old age among long-term/recurrent use of antibiotics in childhood were increased by 18% compared with their counterparts (adjusted odd ratio 1.18, 95% confidence interval 1.08–1.29, p < 0.01). The effect of long-term/recurrent use of antibiotics in childhood on cognitive impairment was homogeneous across different categories of various subgroup variables such as sex, age, APOE4, ethnic groups, income before tax, smoking status, alcohol status, BMI, hypertension and diabetes but the effect of long-term/recurrent use of antibiotics in childhood was modified by the educational qualification (p-value for interaction <0.05).ConclusionLong-term/recurrent use of antibiotics in childhood may increase the risk of cognitive impairment in middle and old age.

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