The ND was in line with dietary recommendations , e.g. low in saturated fats , sugars and salt , but high in plant-based foods rich in fibre and unsaturated fats.The ND significantly decreased cathepsin S levels ( from 20.1 ( + / -4.0 SD ) to 19.7 g/L ( + / -4.3 SD ) ) compared with control group ( from 18.2 ( + / -2.9 SD ) to 19.1 g/L ( + / -3.8 SD ) ) .