Author: New Scientist Health

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Polygenic risk scores estimate your likelihood of developing some health conditionsAndrew Brookes/GettyBy Adam VaughanThe UK’s health secretary said last week that he had booked a blood test because genetic testing revealed he had a high risk of getting prostate cancer. But a new study suggests that this type of genetic technique may not yet be accurate enough to inform healthcare decisions. Genetic tests for conditions caused by a single gene, such as cystic fibrosis, are already used in healthcare.

Many health problems are linked to pollution emitted by petrol and diesel carsAlfribeiro/GettyBy Adam VaughanDirty air in urban areas may be having an impact on sperm. Tests on mice showed that those exposed to tiny pollution particles had worse sperm quality and smaller quantities than mice who were not. Many health problems are linked to pollution emitted by petrol and diesel cars, including respiratory issues, cancer and stunting child development. However, whether the smallest of these air pollutants, PM2.5, could