September 22, 2016 9:34 AM EDT

A roundup of new and noteworthy insights from the week’s most talked-about studies:

1 HOUSEHOLD DUST MIGHT BE DANGEROUS

A study published in Environmental Science and Technology found that 10 chemicals known or thought to harm humans are found at varying levels in 90% of household dust. The chemicals come from household goods like furniture and toys, and can cause a range of issues including respiratory problems and cancer.

2 ADOLESCENTS WILL EAT HEALTHY FOODS IF IT SEEMS REBELLIOUS

A study in Proceedings of the National Academy of Sciences found that eighth-graders were more likely to make healthier food choices when they were framed as appealing to adolescent values–in this case, challenging the authority of food-industry giants.

3 FITNESS TRACKERS MAY NOT HELP WEIGHT LOSS

A report in the Journal of the American Medical Association tracked weight-loss efforts over two years by two groups of people. Only one group used wearables, and its members lost significantly less weight, on average.

–J.Z.

This appears in the October 03, 2016 issue of TIME.

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Write to Julia Zorthian at julia.zorthian@time.com.

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