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The rate of men dying from the form of skin cancer called melanoma has risen over the last 30 years – whilst the rates for women are slowing down or falling. The data from 33 countries might indicate that public health campaigns need to be carefully targeted at men, to encourage sun-smart behaviours and to visit their doctor if they develop a suspicious-looking mole. Future research will also look at whether melanoma is more deadly in men than women.

Delhi banned fireworks during the holy festival of Diwali last year because of the smog that covers the city. But many residents say farming, factories and cars create more of the toxic fumes. Doctors say they are seeing more respiratory problems. And some technology companies are now creating air-purifying systems and nasal filters to clean up the air.

Cultural differences need to be taken into account when diagnosing autism – a fact highlighted in a study carried out in Japan, India and the UK. An in-depth assessment is ideal to diagnose autism but questionnaires given to parents can also help spot tell-tale signs. These were developed in the West – so researchers are now trying to pinpoint which features are universal, and which vary across the globe.

(Photo caption: A man having sun cream rubbed on his back – credit: Getty Images)

Health Check was presented by Claudia Hammond with comments from ´óÏó´«Ã½ Health and Science correspondent, James Gallagher.

Producer: Paula McGrath