Kids learn how to spot dodgy health claims


children in the classroom using the study materials

A study has shown how improved health literacy could help children and adults make better choices about their health

School lessons can successfully teach primary school children to critically evaluate health claims, and could help children make more informed decisions about health treatments and behaviours, according to a trial of over 10,000 children in 120 schools in Uganda published in The Lancet.

The trial is likely to be widely applicable internationally, the authors say.

The school intervention featured a combination comic book and textbook, while a linked study targeted parents, testing the effectiveness of a podcast series on their ability to assess health claims.

In the context of inaccurate health information being widely spread by mass media, good health literacy can help people make good health choices, the authors say, pointing out that this is even more important in low-income countries where individuals can least afford to invest in ineffective treatments.

Most health information offers instructions or claims, but little background information about the basis for the claims that are made, they say. Much health and science education tends to rely on children memorising facts, rather than teaching them critical thinking, which is another complicating factor.

Dr Andy Oxman, co-author from the Norwegian Institute of Public Health, Oslo, Norway, says: “Unreliable claims about treatments are universal and a major public health concern, but few interventions aimed at teaching people to assess these claims have been tested.

“Our trial found that it’s possible to teach children, and their parents these important skills. While the study was conducted in Uganda, pilot testing in Kenya, Rwanda, and Norway lead us to believe the findings are likely to be widely applicable.”

Dr Daniel Semakula, co-author from Makerere University, Kampala, Uganda, says: “What the children are learning is very different from what they are normally taught.

“As one girl put it: ‘You can study about treatments, but this book was all about how to treat yourself.’

“In other words, we are teaching children how to make good choices, not just telling them what they should do.”

The two articles, published in The Lancet, evaluated the effectiveness of the Informed Health Choices school-based intervention aimed at primary school children, and a podcast aimed at parents.

The resources focus on 12 key concepts including that anecdotes are unreliable evidence, that newer or more expensive treatments are not necessarily better, the importance of conflicting interests, and the need for fair comparisons of treatments.

They also use real-world examples such as claims that cow dung can heal burns; that bed nets prevent malaria; or that antibiotics for ear infections do more good than harm.

Half of the 120 schools were randomly allocated to receive the teaching intervention. In the intervention schools, teachers attended a two-day workshop. They taught nine 80-minute lessons over the course of one school term.

In the control group, there was no change to the usual curriculum.

At the end of the school term, children were given a test with two multiple choice questions for each concept. The questions were scenario-based and required children to assess claims.

More than twice as many children in the intervention group achieved a passing score compared those in the control group.

The study on children can be accessed here and the study on parents here.

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