By Ben Hurst & Joseph Wilkes Nutrition expert Dr Michael Mosley has revealed he’s taking a daily supplement costing just 2 pence to ward off dementia and cancer. The 66 year old inventor of the 5:2 and Fast 800 diets revealed he’s consuming Vitamin D daily due to its pivotal health benefits, especially for those advancing in years. In his column for the Daily Mail, the renowned fitness doctor said traditionally, he’s not a fan of supplements as a well-rounded diet should provide all necessary vitamins. However, he asserted that the body’s ability to absorb Vitamin D diminishes as we age – an e…