Some home teeth-whitening kits sold online contain dangerous levels of bleaching chemical that can burn gums and cause tooth loss, an investigation has revealed. The worst had more than 300 times the recommended amount of hydrogen peroxide, says consumer group Which?. A further 20 products out of 36 tested also had illegal levels of the bleach. All have since been removed from sale by outlets including AliExpress, Amazon and eBay. Oral Orthodontic Materials Store, the company

Men who regularly check their testicles for lumps could spot cancer before it becomes severe. More than 2,000 men are diagnosed with testicular cancer every year in the UK, with the risk highest among those aged 30 to 34. While mammograms and cervical screenings help identify common tumours in women, testicular cancer has no national screening programme, making it all the more important that men get a handle on what is normal for them. Testicular cancer is one of the most tre