WEIGHT TO GO: A nasal device which impairs ability to smell could help obese people lose weight, researchers have claimed. The soft silicone contraption is inserted inside the nostrils, enabling users to continue breathing but causing air to bypass the olfactory. The device, named NozNoz, was found to aid weight loss in obese people under the age of 50, according to a pilot study presented at the European Congress on Obesity in Vienna, Austria. A pilot study found that those who used the device every day for five to 12 hours lost an average of 8.3kg in 12 weeks, compared with 4.3kg in the placebo group. Meanwhile, under 50s who used it for more than eight hours a day lost on average 10.1kg during the trial. This may be because ability to smell declines with age, typically from the age of 50, the researchers said. PREVENT CANCER: Drink water and avoid sugary drinks to help prevent cancer, leading scientists have urged. The call comes as part of a string of recommendations on health and lifestyle choices, dubbed a “blueprint to beat cancer”, published by the World Cancer Research Fund (WCRF). Preventing obesity forms a significant part of the advice, with being overweight likely to overtake smoking as the “number one risk factor for cancer” within decades, the organisation warned. There is now strong evidence excessive weight is the cause of at least 12 cancers, five more than when the last WCRF recommendations were published in 2007, the authors said. For the first time separate recommendations have been included on limiting consumption of soft drinks — urging people to “drink mostly water and unsweetened drinks” — and processed foods. People should reduce their consumption of fast food and those high in fat, starches and sugars to help control calorie intake, it states. The number of new cases of cancer is expected to rise by 58% to 24 million globally by 2035. Around 40% of cancers are estimated to be preventable, the authors said.