25% is the reduction in common cold infections associated with regular consumption of nutritional yeast. Otherwise known as ‘nooch’, it’s the cousin to baker’s and brewer’s yeasts, but it’s been ‘deactivated’ with heat and dried to be used as a food product. These golden flakes are rich in nutrients on their own, but are also often fortified with even more vitamins. Nooch also contains high levels of soluble fibres called beta-glucans, which support the immune system to fight bacterial infections. It has a cheesy, nutty, savoury flavour and can be added to just about all meals for extra protein, vitamins, minerals and antioxidants.