Analysis and Comment

Probiotics are live microorganisms that have been delivering health benefits for thousands of years by helping to establish healthy gut microbiota. Belinda (miscdebris)/Flickr

Explainer: what is the gut microbiota and how does it affect mind and body?

The human gastrointestinal tract harbours trillions of microorganisms, with up to 1,000 or so different bacterial species.

What does our attention span mean?

Trying to focus on a task involves attention control – the ability to maintain focus on something over a period of time. What exactly is an attention span? Does it relate to intelligence? Can it change?

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Zika virus

The link between Zika and microcephaly is not proven, but the incidence of both have greatly increased in the same areas. Percio Campos/Flickr

Explainer: what is microcephaly and what is its relationship to Zika virus?

Despite high rates of infection, the Zika outbreak would not have been particularly alarming had it not been for the sudden and – apparently associated – increase in the numbers of infants born with microcephaly.

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Autism spectrum disorder

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