It was in September last year that Hamilton revealed that for health and environmental reasons, he was to become a vegan, removing all animal-based products, such as meat, seafood, dairy, even honey, from his diet. Many people questioned this mid-season lifestyle change. They talked of the potential harm to his "racing edge," due to a possible drop in testosterone, the lack of protein, iron and Vitamin D deficiency. However, the dietary change did not do the 32-year-old any harm. Two months after announcing his switch, Hamilton won the world title, creating history in the process by becoming the first Briton to win four F1 world titles and made Hamilton feel "better than ever".